| A - General Works | | Collections, Series, Collected Works | AC |
| Encyclopedias | AE |
| Dictionaries | AG |
| Museums, Collectors and Collecting | AM |
| Periodicals | AP |
| Academies and Learned Societies | AS |
| Yearbooks, Almanacs, Directories | AY |
| History of Scholarship and Learning, The Humanities | AZ |
| Zeitschriften / Periodicals |
B - Philosophy, Psychology, Religion | | Philosophy (General) | B |
| Logic | BC |
| Speculative Philosophy | BD |
| Psychology | BF 1-990 |
| Parapsychology | BF 1001-1389 |
| Occult Sciences | BF 1404-2055 |
| Aesthetics | BH |
| Ethics | BJ |
| Religions, Mythology, Rationalism | BL |
| Judaism | BM |
| Islam, Bahai Faith, Theosophy, etc. | BP |
| Buddhism | BQ |
| Christianity | BR |
| The Bible | BS |
| Doctrinal Theology | BT |
| Practical Theology | BV |
| Christian Denominations | BX |
| Zeitschriften / Periodicals |
C - Auxiliary Sciences of History | | History of Civilization | CB |
| Diplomatics, Archives, Seals | CD |
| Technical Chronology, Calendar | CE |
| Genealogy | CS |
| Biography | CT |
| Zeitschriften / Periodicals |
D - World History and History of Europe, Asia, etc. | | History (General) | D |
| History of Great Britain | DA |
| History of Central Europe | DAW |
| History of Austria, Liechtenstein, Hungary, Czechoslovakia | DB |
| History of France | DC |
| History of Germany | DD |
| History of the Greco-Roman World | DE |
| History of Greece | DF |
| History of Italy | DG |
| History of Netherlands (Holland) | DJ |
| History of Eastern Europe (General) | DJK |
| History of Russia, Soviet Union, Former Soviet Republics | DK 1-949.5 |
| History of Poland | DK 4010-4800 |
| History of Northern Europe, Scandinavia | DL |
| History of Switzerland | DQ |
| History of Balkan Peninsula | DR |
| History of Asia | DS |
| History of Africa | DT |
| History of Romanies | DX |
| Zeitschriften / Periodicals |
E-F - History of the Americas | | United States | E |
| Local History of the Americas | F |
| Zeitschriften / Periodicals |
G - Geography, Anthropology, Recreation | | Geography (General) | G 1-922 |
| Atlases | G 1000-3122 |
| Physical Geography | GB |
| Environmental Sciences | GE |
| Human Ecology, Anthropogeography | GF |
| Physical Anthropology | GN 49-298 |
| Ethnology | GN 301-674 |
| Historic Archaeology | GN 700-890 |
| Folklore | GR |
| Manners and Customs (General) | GT |
| Recreation, Leisure | GV |
| Zeitschriften / Periodicals |
H - Social Sciences | | Social Sciences (General) | H |
| Statistics | HA |
| Economic Theory, Demography | HB |
| Economic History and Conditions | HC |
| Industries, Land use, Labor | HD |
| Transportation and Communication | HE |
| Commerce | HF |
| Finance | HG |
| Public Finance | HJ |
| Sociology | HM |
| Social History and Conditions, Social Problems | HN |
| Sexual Life | HQ 12-449 |
| Family, Marriage, Home | HQ 503-1064 |
| Men | HQ 1088-1090.7 |
| Women | HQ 1101-2030.7 |
| Life Skills | HQ 2035-2039 |
| Life Style | HQ 2042-2044 |
| Societies: secret, benevolent, etc. | HS |
| Communities, Classes, Races | HT |
| Social Pathology, Social and Public Welfare | HV |
| Socialism, Communism, Anarchism | HX |
| Zeitschriften / Periodicals |
J - Political Science | | General Legislative and executive Papers | J |
| Political Science (General) | JA |
| Political Theory, The State, Theories of the State | JC |
| Political Institutions and Public Administration | JF |
| Political Institutions and Public Administration (North America) | JJ |
| Political Institutions and Public Administration (United States) | JK |
| Political Institutions and Public Administration (Europe) | JN |
| Colonies and Colonization, Emigration and Immigration, International Migration | JV |
| International Law | JX |
| International Relations | JZ |
| Zeitschriften / Periodicals |
K - Law | | Law in General, Comparative and Uniform Law, Jurisprudence | K |
| Zeitschriften / Periodicals |
L - Education | | Education (General) | L |
| History of Education | LA |
| Theory and Practice of Education | LB |
| Special Aspects of Education | LC |
| Individual Institutions | LF |
| Zeitschriften / Periodicals |
M - Music | | Music | M |
| Literature on Music | ML |
| Instruction and study | MT |
| Zeitschriften / Periodicals |
N - Fine Arts | | Visual Arts | N |
| Architecture | NA |
| Sculpture | NB |
| Drawing, Design, Illustration | NC |
| Painting | ND |
| Arts in General | NX |
| Zeitschriften / Periodicals |
P - Language and Literature | | Philology, Linguistics | P |
| Classical Philology | PA |
| Romance | PC |
| Germanic | PD |
| English | PE |
| West Germanic | PF |
| Slavic, Baltic, Albanian | PG |
| Literature (General) | PN |
| French and Spanish Literature | PQ |
| English Literature | PR |
| German Literature | PT |
| Zeitschriften / Periodicals |
Q - Science | | Science (General) | Q |
| Mathematics | QA |
| Astronomy | QB |
| Physics | QC |
| Chemistry | QD |
| Geology | QE |
| Natural History and Biology (General) | QH |
| Botany | QK |
| Zoology | QL |
| Physiology | QP |
| Microbiology | QR |
| Zeitschriften / Periodicals |
QS - Human Anatomy | | Anatomy | QS 1-132 |
| Histology | QS 504-532 |
| Embryology | QS 604-681 |
| Zeitschriften / Periodicals |
QT - Physiology | | Reference Works, General Works | QT 1-33.1 |
| Physics, Mathematics, Engineering | QT 34-37 |
| Human Physiology | QT 104-172 |
| Physiology, Hygiene | QT 180-245 |
| Leisure Activities, Sports Medicine | QT 250-275 |
| Zeitschriften / Periodicals |
QU - Biochemistry, Cell Biology and Genetics | | Reference Works, General Works | QU 1-54 |
| Proteins, Amino Acids, Peptides | QU 55-70 |
| Carbohydrates, Lipids | QU 75-99 |
| Biochemistry of the Human Body | QU 100-133 |
| Enzymes | QU 135-144 |
| Nutrition, Vitamins | QU 145-220 |
| Cells | QU 300-375 |
| Genetics | QU 450-560 |
| Zeitschriften / Periodicals |
QV - Pharmacology | | Reference Works, General Works | QV 1-57 |
| Dermatologic Agents, Gastrointestinal Agents | QV 60-75 |
| Central Nervous System Agents, Local Anesthetics | QV 76-113 |
| Autonomic Agents, Nonmetallic Elements, Neuromuscular Agents | QV 120-140 |
| Cardiovascular Agents, Anti-Allergic Agents, Natriuretic Agents | QV 150-160 |
| Reproductive Control Agents | QV 170-177 |
| Hematologic Agents | QV 180-195 |
| Local Anti-Infective Agents, Coloring Agents, Complex Mixtures | QV 220-241 |
| Anti-Inflammatory Agents, Anti-Infective Agents, Antineoplastic Agents | QV 243-269 |
| Water, Electrolytes | QV 270-285 |
| Heavy Metals | QV 290-298 |
| Noble Gases, Oxygen, Antioxidants | QV 310-325 |
| Anti-Bacterial Agents, Tissue Extracts | QV 350-370 |
| Toxicology | QV 600-666 |
| Pharmacy and Pharmaceutics | QV 701-835 |
| Zeitschriften / Periodicals |
QW - Microbiology and Immunology | | Microbiology | QW 1-300 |
| Immunology | QW 501-949 |
| Zeitschriften / Periodicals |
QX - Parasitology | | Parasitology | QX 1-675 |
| Zeitschriften / Periodicals |
QY - Clinical Pathology | | Reference Works, General Works | QY 1-39 |
| Laboratory Animals, Laboratory Techniques | QY 50-110 |
| Diagnostic Tests | QY 120-350 |
| Blood, Blood Chemistry | QY 400-490 |
| Zeitschriften / Periodicals |
QZ - Pathology | | Reference Works, General Works | QZ 1-39 |
| Pathogenesis, Etiology | QZ 40-109 |
| Manifestations of Disease | QZ 140-190 |
| Neoplasms, Cysts | QZ 200-380 |
| Zeitschriften / Periodicals |
S - Agriculture | | Agriculture (General) | S |
| Plant Culture | SB |
| Animal Culture | SF |
| Zeitschriften / Periodicals |
T - Technology | | Technology (General) | T |
| Engineering (General), Civil Engineering (General) | TA |
| Environmental Technology, Sanitary Engineering | TD |
| Highway Engineering. Roads and pavements | TE |
| Railroad Engineering and Operation | TF |
| Building Construction | TH |
| Mechanical Engineering and Machinery | TJ |
| Electrical Engineering, Electronics, Nuclear Engineering | TK |
| Motor Vehicles, Aeronautics, Astronautics | TL |
| Mining Engineering, Metallurgy | TN |
| Chemical Technology | TP |
| Photography | TR |
| Manufactures | TS |
| Handicrafts. Arts and Crafts | TT |
| Home Economics | TX |
| Zeitschriften / Periodicals |
U - Military Science | | Military Science (General) | U |
| Armies: Organization, Distribution, Military Situation | UA |
| Military Administration | UB |
| Military Engineering | UG |
| Other Services | UH |
| Zeitschriften / Periodicals |
V - Naval Science | | Minor Services of Navies | V |
| Zeitschriften / Periodicals |
W - General Medicine, Health Professions | | Reference Works, General Works | W 1-28 |
| Medical Economics | W 74-80 |
| Biomedical Technology | W 82-83.1 |
| Health Services, Patients and Patient Advocacy | W 84-85.5 |
| Professional Practice | W 87-96 |
| Medical, Dental, and Pharmaceutical Service Plans | W 100-275 |
| Preventive Medicine | WA 108-245 |
| Accident and Injury Prevention, Disasters | WA 250-295 |
| Health Problems of Special Population Groups | WA 300-395 |
| Occupational Medicine, Health, and Hygiene | WA 400-495 |
| Health Administration and Organization | WA 525-590 |
| Sanitation, Environmental Control | WA 670-847 |
| Statistics, Surveys | WA 900-950 |
| Zeitschriften / Periodicals |
WB - Practice of Medicine | | Reference Works, General Works | WB 1-117 |
| Home Health Care, Works about Medicine for the Layperson | WB 120-130 |
| Diagnosis | WB 141-293 |
| Therapeutics | WB 300-962 |
| Zeitschriften / Periodicals |
WC - Communicable Diseases | | Reference Works, General Works | WC 1-100 |
| Sexually Transmitted Diseases | WC 140-185 |
| Infection, Bacterial Infections | WC 195-425 |
| Mycoses | WC 450-475 |
| Virus Diseases | WC 500-590 |
| Rickettsiaceae Infections, Chlamydiaceae Infections | WC 600-660 |
| Tropical and Parasitic Diseases | WC 680-950 |
| Zeitschriften / Periodicals |
WD - Disorders of Systemic, Metabolic or Environmental Origin, etc. | | Nutrition Disorders | WD 100-175 |
| Metabolic Diseases | WD 200-226 |
| Immunologic and Collagen Diseases, Hypersensitivity | WD 300-380 |
| Animal Poisons | WD 400-430 |
| Plant Poisons | WD 500-530 |
| Disorders and Injuries of Environmental Origin | WD 600-670 |
| Aviation Medicine | WD 700-745 |
| Space Medicine | WD 750-758 |
| Naval Medicine | WD 800 |
| Zeitschriften / Periodicals |
WE - Musculoskeletal System | | Reference Works, General Works | WE 1-141 |
| Orthopedics, Reconstructive Orthopedics, Bone Transplantation | WE 168-190 |
| Bones | WE 200-259 |
| Joint Tissues | WE 300-400 |
| Muscles and Tendons | WE 500-600 |
| Head and Trunk | WE 700-715 |
| Back | WE 720-755 |
| Extremities | WE 800-886 |
| Podiatry | WE 890 |
| Zeitschriften / Periodicals |
WF - Respiratory System | | Reference Works, General Works | WF 1-110 |
| Diseases of the Respiratory System | WF 140-900 |
| Thorax, Thoracic Surgery | WF 970-985 |
| Zeitschriften / Periodicals |
WG - Cardiovascular System | | Reference Works, General Works | WG 1-113 |
| Cardiovascular Diseases, Diagnosis and Therapeutics | WG 120-170 |
| Heart, Heart Diseases | WG 200-460 |
| Blood Vessels, Vascular Diseases | WG 500-700 |
| Zeitschriften / Periodicals |
WH - Hemic and Lymphatic System | | Reference Works, General Works | WH 1-100 |
| Hematologic Diseases, Immunologic Factors, Blood Banks | WH 120-540 |
| Lymphatic System | WH 600-700 |
| Zeitschriften / Periodicals |
WI - Digestive System | | Reference Works, General Works | WI 1-150 |
| Stomatognathic System, Esophagus | WI 200-250 |
| Stomach | WI 300-387 |
| Intestines | WI 400-575 |
| Anus, Rectum | WI 600-650 |
| Liver, Biliary Tract | WI 700-770 |
| Pancreas | WI 800-830 |
| Abdomen, Abdominal Surgery | WI 900-970 |
| Zeitschriften / Periodicals |
WJ - Urogenital System | | Reference Works, General Works | WJ 1-190 |
| Kidney | WJ 300-378 |
| Ureter, Bladder, Urethra | WJ 400-600 |
| Male Genitalia | WJ 700-875 |
| Zeitschriften / Periodicals |
WK - Endocrine System | | Reference Works, General Works | WK 1-148 |
| Hormones, Hormone Therapy | WK 150-190 |
| Thyroid Gland, Parathyroid Glands | WK 200-300 |
| Pineal Gland, Thymus Gland | WK 350-400 |
| Pituitary Gland | WK 500-590 |
| Adrenal Glands | WK 700-790 |
| Islets of Langerhans | WK 800-885 |
| Gonads | WK 900-920 |
| Zeitschriften / Periodicals |
WL - Nervous System | | Reference Works, General Works | WL 1-102 |
| Neurons | WL 102.5-102.9 |
| Psychophysiology, Neuroscience Specialties | WL 103-108 |
| Diseases, Examination and Diagnosis (General) | WL 140-160 |
| Central Nervous System, Disorders, Therapeutics | WL 200-405 |
| Peripheral Nerves | WL 500-544 |
| Autonomic Nervous System | WL 600-610 |
| Sense Organs | WL 700-710 |
| Zeitschriften / Periodicals |
WM - Psychiatry | | Reference Works, General Works | WM 1-110 |
| Mental Disorders, Diagnosis, Behavioral Symptoms | WM 140-167 |
| Neurotic Disorders | WM 170-197 |
| Psychotic Disorders | WM 200-220 |
| Substance-Related Disorders | WM 270-290 |
| Intellectual Disability | WM 300-308 |
| Therapies | WM 400-460.7 |
| Other Disorders | WM 475-611 |
| Zeitschriften / Periodicals |
WN - Radiology, Diagnostic Imaging | | Reference Works, Diagnostic Technology | WN 1-160 |
| Diagnostic Imaging, Radiography | WN 180-240 |
| Radiotherapy | WN 250-250.6 |
| Radium | WN 300-340 |
| Radioactivity (Excluding Roentgen Rays and Radium) | WN 415-665 |
| Zeitschriften / Periodicals |
WO - Surgery | | Reference Works, General Works | WO 1-102 |
| Antisepsis, Diseases, Diagnosis, Shock | WO 113-149 |
| Surgical Equipment, Artificial Organs | WO 162-176 |
| Principles of Care, Procedures | WO 178-198 |
| Anesthesia | WO 200-460 |
| Operative Surgical Procedures, Techniques | WO 500-517 |
| Plastic Surgery, Reconstructive Surgical Procedures | WO 600-640 |
| Transplantation | WO 660-690 |
| Traumatic Injuries | WO 700-820 |
| Special Age Groups | WO 925-950 |
| Zeitschriften / Periodicals |
WP - Gynecology | | Reference Works, General Works | WP 1-390 |
| Uterus, Cervix | WP 400-480 |
| Physiology | WP 505-560 |
| Fertility, Infertility | WP 565-570 |
| Menopause, Sexual Dysfunction | WP 580-610 |
| Contraception | WP 630-640 |
| Therapy | WP 650-660 |
| Breast | WP 800-910 |
| Zeitschriften / Periodicals |
WQ - Obstetrics | | Reference Works, General Works | WQ 1-150 |
| Childbirth, Prenatal Care | WQ 152-175 |
| Reproduction, Pregnancy | WQ 200-212 |
| Pregnancy Complications | WQ 215-270 |
| Labor | WQ 300-330 |
| Obstetric Surgical Procedures | WQ 400-450 |
| Postpartum Period | WQ 500-505 |
| Zeitschriften / Periodicals |
WR - Dermatology | | Reference Works, General Works | WR 1-105 |
| Skin Diseases | WR 140-340 |
| Parasitic Skin Diseases | WR 345-375 |
| Skin Appendages | WR 390-475 |
| Neoplasms, Ulcers, Occupational Dermatitis, Therapy | WR 500-660 |
| Zeitschriften / Periodicals |
WS - Pediatrics | | Reference Works, General Works | WS 1-100 |
| Growth and Development | WS 103-105 |
| Intellectual Disability, Learning Disorders | WS 107-110 |
| Child Care, Nutrition, Physical Examination | WS 113-141 |
| Diseases of Children and Adolescents | WS 200-342 |
| Child Psychology, Child Psychiatry | WS 350-350.8 |
| Pediatric Specialties | WS 360-368 |
| By Age Groups | WS 405-460 |
| Adolescent Psychology, Adolescent Psychiatry | WS 462-463 |
| Zeitschriften / Periodicals |
WT - Geriatrics, Chronic Disease | | Reference Works | WT 1-39 |
| Geriatrics | WT 100-166 |
| Chronic Disease | WT 500 |
| Zeitschriften / Periodicals |
WU - Dentistry, Oral Surgery | | Reference Works, General Works | WU 1-49 |
| Ethics, Professional Practice and Personnel, Records | WU 50-95 |
| Anatomy, Physiology, Hygiene | WU 100-113.7 |
| Diseases, Injuries, Technology, Therapeutics | WU 140-166 |
| Dental Chemistry and Materials | WU 170-190 |
| Dental Anatomy, Diseases | WU 210-290 |
| Operative Dentistry | WU 300-360 |
| Orthodontics | WU 400-440 |
| Special Patient Groups | WU 460-495 |
| Prosthodontics | WU 500-530 |
| Oral Surgery | WU 600-640 |
| Zeitschriften / Periodicals |
WV - Otolaryngology | | Reference Works, General Works | WV 1-101 |
| Diseases, Therapeutics | WV 140-190 |
| Ear | WV 200-290 |
| Nose and Paranasal Sinuses | WV 300-358 |
| Pharyngeal Region | WV 400-440 |
| Larynx | WV 500-540 |
| Zeitschriften / Periodicals |
WW - Ophthalmology | | Reference Works, General Works | WW 1-100 |
| Eye | WW 101-290 |
| Refraction, Errors of Refraction | WW 300-340 |
| Corrective Devices | WW 350-358 |
| Neuromuscular Mechanism, Neurologic Manifestations of Disease | WW 400-460 |
| Manifestations of Disease, Poor Vision | WW 475-480 |
| Occupational Ophthalmology, Eye Injuries | WW 505-525 |
| Age Groups | WW 600-620 |
| Optometry | WW 704-722.1 |
| Zeitschriften / Periodicals |
WX - Hospitals and Other Health Facilities | | Reference Works, General Works | WX 1-100 |
| Facility Design and Construction, Equipment | WX 140-147 |
| Hospital Administration and Health Facility Administration | WX 150-190 |
| Clinical Departments and Units | WX 200-225 |
| Zeitschriften / Periodicals |
WY - Nursing | | Reference Works | WY 1-49 |
| Economics, Ethics, Philosophy, Psychological Aspects | WY 77-88 |
| Referral, Nursing Care, Assessment and Audit | WY 90-100.7 |
| Nursing Specialties | WY 101-145 |
| Nursing in Special Fields of Medicine | WY 150-170 |
| Other Services | WY 191-200 |
| Zeitschriften / Periodicals |
WZ - History of Medicine, Medical Miscellany | | Reference Works, General Works | WZ 1-40 |
| History by Period, Locality, etc. | WZ 51-80 |
| Biography | WZ 100-150 |
| Manuscripts | WZ 220-225 |
| Early Printed Books | WZ 230-260 |
| Modern Versions and Commentaries of Early Works | WZ 290-294 |
| Miscellany Relating to Medicine | WZ 305-350 |
| Zeitschriften / Periodicals |
X - Bibliothekswesen - Informationsangebote | | Bibliothekswesen | X |
| Informationsangebote | XA |
| Zeitschriften / Periodicals |