The Library uses the Library of Congress (LC) Classification Scheme to classify library materials. The Library of Congress in Washington D.C., from which the LC Classification System is derived, is the largest national library in the world.
| Class | Subject | |
|---|---|---|
| A | GENERAL WORKS | |
| B | PHILOSOPHY, PSYCHOLOGY, RELIGION | |
| B-BJ | Philosophy, Psychology | |
| BL-BX | Religion | |
| C | AUXILIARY SCIENCES OF HISTORY | |
| CT | Biography | |
| D | HISTORY (Other than American) | |
| DS | Asia | |
| E | HISTORY - U.S. - General | |
| F | HISTORY - U.S. (Local), Canada, Latin America | |
| G | GEOGRAPHY, ANTHROPOLOGY, RECREATION | |
| GE | Environmental Sciences | |
| H | SOCIAL SCIENCES | |
| HA | Statistics | |
| HB | Economic Theory | |
| HC | Economic History and Conditions : National Production and Economic Conditions by Country; Environmental Policy | |
| HD | Economic History and Conditions by Industry; Labor | |
| HE | Transportation and Communication | |
| HF | Commerce, Business and Management including Accountancy and Industrial Psychology | |
| HG | Finance including : Money, Banking, Investment, Insurance | |
| HJ | Public Finance including Taxation | |
| HM | Sociology | |
| HN | Social History and Conditions, Social Problems, Social Reform | |
| HQ | Social Groups : Family, Marriage, Woman | |
| HV | Social Pathology, Social and Public Welfare, Criminology | |
| J | POLITICS AND GOVERNMENT | |
| JZ | International Relations (for International Law, refer to KZ & JX) | |
| K | LAW | |
| KD | Law of the United Kingdom and Ireland | |
| KE | Law of Canada | |
| KF | Law of the United States | |
| KNN | Law of China (pre-PRC) | |
| KNP | Law of Taiwan | |
| KNQ | Law of PRC | |
| KNR & KYQ | Law of Hong Kong | |
| KU & KYT | Law of Australia and New Zealand | |
| KZ & JX | International Law | |
| L | EDUCATION | |
| LB | Theory and Practice of Education : Teaching, Teacher Training, School Administration and Organization | |
| M | MUSIC | |
| N | FINE ARTS | |
| NA | Architecture | |
| P | LANGUAGE AND LITERATURE | |
| PL | Language and Literature of Eastern Asia, Africa, Oceania | |
| PR | English Literature | |
| PS | American Literature (General works on translations are classed : PN241) | |
| Q | SCIENCE (General) | |
| QA | Mathematics, Computing Science (Software) | |
| QB | Astronomy | |
| QC | Physics | |
| QD | Chemistry | |
| QE | Geology | |
| QH | Natural History - General, Biology - General, Ecology | |
| QK | Botany | |
| QL | Zoology | |
| QM | Human Anatomy | |
| QP | Physiology | |
| QR | Microbiology | |
| R | MEDICINE | |
| S | AGRICULTURE | |
| SF | Animal Culture | |
| T | ENGINEERING AND TECHNOLOGY | |
| TA | Civil Engineering | |
| TC | Hydraulic Engineering | |
| TD | Environmental Technology | |
| TE | Highway Engineering, Roads and Pavements | |
| TF | Railroad Engineering and Operation | |
| TG | Bridge Engineering | |
| TH | Building Construction | |
| TJ | Mechanical Engineering | |
| TK | Electrical Engineering, Electronics, Computing Science (Hardware) | |
| TP | Chemical Technology | |
| TR | Photography | |
| TS | Manufactures | |
| U | MILITARY SCIENCE | |
| V | NAVAL SCIENCE | |
| Z | BIBLIOGRAPHY AND LIBRARY SCIENCE | |
