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Piedmont Tech uses the Library of Congress Classification System to organize most of our physical resources. Each item is labeled with a unique call number that indicates the item's proper place on the library shelves. Call numbers are primarily based on subject matter and can be helpful if you are trying to locate information on a certain topic. The information below matches Library of Congress call number groups with the subjects that they represent: A | General Works | AC | Collections | | AE | Encyclopedias | | AG | Dictionaries | | AI | Indexes | | AM | Museums | | AN | Newspapers | | AP | Periodicals | | AS | Academies & Learned Societies | | AY | Yearbooks, Almanacs, Directories | | AZ | History of Scholarship, The Humanities |
| B | Philosophy, Psychology & Religion | B | Philosophy (General) | | BC | Logic | | BD | Speculative Philosophy | | BF | Psychology, Parapsychology, Occult Sciences | | BH | Aesthetics | | BJ | Ethics, Social Usages, Etiquette | | BL | Religion, Mythology | | BM | Judaism | | ">BP | Islam, Bahai Faith, Theosophy, etc. | | BQ | Buddhism | | BR | Christianity, Church History | | BS | Bible | | BT | Doctrinal Theology | | BV | Practical Theology | | BX | Christian Denominations |
| C | Auxiliary Sciences of History (General) | CB | History of Civilization | | CC | Archaeology | | CD | Diplomatics, Archives, Seals | | CE | Technical Chronology, Calendar | | CI | Numismatics | | CN | Inscriptions, Epigraphy | | CR | Heraldry | | CS | Genealogy | | CT | Biography (General) |
| D | History (General) / Europe (General) | DA | Great Britain | | DAW | Central Europe | | DB | Austria, Hungary, Czechoslovakia | | DC | France | | DD | Germany | | DE | The Greco-Roman World | | DF | Greece | | DG | Italy | | DH | Low Countries, Benelux Countrie | | DJ | Netherlands (Holland) | | DJK | Eastern Europe (General) | | DK | Russia, Soviet Union, Former Soviet Republics, Poland | | DL | Northern Europe, Scandinavia | | DP | Spain, Portugal | | DQ | Switzerland | | DR | Balkan Peninsula, Turkey | | DS | Asia | | DT | Africa | | DU | Oceania (South Seas) | | DX | Gypsies |
| E - F | History: America | E | United States (General) | | F | United States Local History, Canada, Latin America |
| G | Geography, Anthropology & Recreation | G | Geography (General), Atlases, Globe, Maps | | GA | Mathematical Geography, Cartography | | GB | Physical Geography | | GC | Oceanography | | GE | Environmental Sciences | | GF | Human Ecology, Anthropogeography | | GN | Anthropology | | GR | Folklore | | GT | Manners and Customs (General) | | GV | Recreation, Leisure |
| H | Social Sciences | H | Social Sciences (General) | | HA | Statistics | | HB | Economic Theory, Demography | | HC | Economic History and Conditions | | HD | Economic History and Conditions | | HE | Transportation and Communications | | HF | Commerce | | HG | Finance | | HJ | Public Finance | | HM | Sociology (General) | | HN | Social History and Conditions, Social Problems, Social Reform | | HQ | The Family, Marriage, Women | | HS | Societies: Secret, Benevolent, etc. | | HT | Communities, Classes, Race | | HV | Social Pathology, Social and Public Welfare | | HX | Socialism, Communism, Anarchism |
| J | Political Science | J | General Legislative and Executive Papers | | JA | Political Science (General) | | JC | Political Theory | | JF | Political Institutions and Public Administration (General) | | JK | Political Institutions and Public Administration (United States) | | JL | Political Institutions and Public Administration (Canada, Latin America) | | JN | Political Institutions and Public Administration (Europe) | | JQ | Political Institutions and Public Administration (Asia, Africa, Australia, Pacific Area) | | JS | Local Government, Municipal Government | | JV | Colonies and Colonization, Emigration and Immigration | | JZ | International Relations |
| K | Law | K | General, Comparative and Uniform Law, Jurisprudence | | KD | United Kingdom and Ireland | | KDZ | America, North America | | KE | Canada | | KF | United States | | KG | Latin America, Central America, West Indies | | KH | South America | | KJ-KK | Europe | | KL-KW | Asia, Africa, Pacific Area, Antarctica | | KZ | Law of Nations |
| L | Education | L | Education (General) | | LA | History of Education | | LB | Theory and Practice of Education | | LC | Special Aspects of Education | | LD | Individual Institutions — United States | | LE | Individual Institutions — America (except United States) | | LF | Individual Institutions — Europe | | LG | Individual Institutions — Asia, Africa, Oceania | | LH | College and School Magazines and Papers | | LJ | Student Fraternities and Societies, United States | | LT | Textbooks |
| M | Music | M | Musical Works | | ML | Literature on Music | | MT | Musical Instruction and Study |
| N | Fine Arts | N | Visual Arts (General) | | NA | Architecture | | NB | Sculpture | | NC | Drawing, Design, Illustration | | ND | Painting | | NE | Print Media | | NK | Decorative Arts, Applied Arts | | NX | Arts in General |
| P | Language & Literature | P | Philology, Linguistics | | PA | Greek and Latin Language and Literatures | | PB | Modern Languages (General), Celtic Languages | | PC | Romance Languages | | PD | Germanic Languages (General), Scandinavian Languages | | PE | English Language | | PF | West Germanic Languages | | PG | Slavic, Baltic, Albanian Languages and Literatures | | PH | Finno-Ugric, Basque Languages and Literatures | | PJ | Oriental Languages and Literatures (General), Semitic Languages and Literatures | | PK | Indo-Iranian Languages and Literatures | | PL | Languages and Literatures of Eastern Asia, Africa, Oceania | | PM | Hyperborean, Indian, and Artificial Languages | | PN | Literature (General) | | PQ | French, Italian, Spanish and Portuguese Literatures | | PR | English Literature | | PS | American Literature | | PT | Germanic Literature | | PZ | Juvenile Belles Lettres |
| Q | Science | Q | Science (General) | | QA | Mathematics | | QB | Astronomy | | QC | Physics | | QD | Chemistry | | QE | Geology | | QH | Natural History (General) | | QH | Biology (General) | | QK | Botany | | QL | Zoology | | QM | Human Astronomy | | QP | Physiology | | QR | Microbiology |
| R | Medicine | R | Medicine (General) | | RA | Public Aspects of Medicine | | RB | Pathology | | RC | Internal Medicine | | RD | Surgery | | RE | Ophthalmology | | RF | Otorhinolaryngology | | RG | Gynecology and Obstetrics | | RJ | Pediatrics | | RK | Dentistry | | RL | Dermatology | | RM | Therapeutics, Pharmacology | | RS | Pharmacy and Materia Medica | | RT | Nursing | | RV | Botanic, Thomsonian, and Eclectic Medicine | | RX | Homeopathy | | RZ | Other Systems of Medicine |
| S | Agriculture | S | Agriculture (General) | | SB | Plant Culture | | SD | Forestry | | SF | Animal Culture | | SH | Aquaculture, Fisheries, Angling | | SK | Hunting Sports |
| T | Technology | T | Technology (General) | | TA | Engineering (General), Civil Engineering | | TC | Hydraulic Engineering | | TD | Environmental Engineering, Sanitary Engineering | | TE | Highway Engineering, Roads and Pavements | | TF | Railroad Engineering and Operation | | TG | Bridge Engineering | | TH | Building Construction | | TJ | Mechanical Engineering and Machinery | | TK | Electrical Engineering, Electronics, Nuclear Engineering | | TL | Motor Vehicles, Aeronautics, Astronautics | | TN | Mining Engineering, Metallurgy | | TP | Chemical Technology | | TR | Photography | | TS | Manufactures | | TT | Handicrafts, Arts and Crafts | | TX | Home Economics, Hospitality Industry |
| U | Military Science | U | Military Science (General) | | UA | Armies: Organization, Distribution, Military Situation | | UB | Military Administration | | UC | Maintenance and Transportation | | UD | Infantry | | UE | Cavalry, Armor | | UF | Artillery | | UG | Military Engineering, Air Forces | | UH | Other Services |
| V | Naval Science| V | Naval Sciences (General) | | VA | Navies: Organization, Distribution, Naval Situation | | VB | Naval Administration | | VC | Naval Maintenance | | VD | Naval Seamen | | VE | Marines | | VF | Naval Ordnance | | VG | Minor Services of Navies | | VK | Navigation, Merchant Marine | | VM | Naval Architecture, Shipbuilding, Marine Engineering |
| Z | Bibliography & Library Science | Z | Books Writing, Paleography, Libraries, Bibliography | | ZA | Information Resources (General) |
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Source: Library of Congress. Library of Congress Classification System Pocket Guide. 2000.
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