| CLASS | SUBJECT TERM |
|
| A | Theoretical and general aspects of LIS |
| AA | Library and information science as a field |
| AB | Information theory and library theory |
| AC | Relationship of LIS with other fields |
| B | Information use and sociology of information |
| BA | Use and impact of information |
| BC | Information in society |
| BD | Information society |
| BE | Information economics |
| BF | Information policy |
| BG | Information dissemination and diffusion |
| BH | Information needs and requirements analysis |
| BI | User interfaces, usability |
| C | Users, literacy and reading |
| CA | Use studies |
| CB | User studies |
| CC | User categories |
| \ CCA | User categories, children |
| \ CCB | User categories, young people |
| \ CCC | User categories, social groups |
| CD | User training, promotion, activities, education |
| CE | Literacy |
| CF | Reading and story telling |
| D | Libraries as physical collections |
| DA | World libraries |
| DB | National libraries |
| DC | Public libraries |
| DD | Academic libraries |
| DE | School libraries |
| DF | Government libraries |
| DG | Private libraries |
| DH | Special libraries |
| \ DHA | Special libraries, corporate |
| \ DHB | Special libraries, nonprofit |
| DI | Science libraries |
| DJ | Technical libraries |
| DK | Health libraries, medical libraries |
| DL | Archives |
| DM | Museums |
| E | Publishing and legal issues |
| EA | Mass media |
| EB | Publishing |
| \ EBA | Printing |
| \ EBB | Electronic publishing |
| \ EBC | Broadcasting |
| EC | Bookselling |
| ED | Intellectual property and copyright |
| EE | Intellectual freedom |
| EF | Censorship |
| F | Management |
| FA | Cooperation |
| FB | Marketing |
| FC | Finance |
| FD | Public relations |
| FE | Personnel management |
| FF | Funding |
| FG | Local government |
| FH | Reorganization |
| FI | Unitary authorities |
| FJ | Records management |
| FK | Knowledge management |
| G | LIS industry, profession and education |
| GA | Information industry |
| GB | Software industry |
| GC | Computer and telecommunication industry |
| GD | Organizations |
| GE | Library staff |
| GF | Biographies |
| GG | LIS curriculum aspects |
| GH | Librarian education |
| GI | Training |
| H | Information sources, supports, channels |
| HA | Periodicals, newspapers |
| \ HAA | Periodicals |
| \ HAB | Newspapers |
| HB | Gray literature |
| HC | Archival materials |
| HD | Rare books and manuscripts |
| HE | Print materials |
| HF | Microforms |
| HG | Non-print materials |
| HH | Audio-visual, multimedia materials |
| HI | Electronic media |
| HJ | CD-ROM |
| HK | Online hosts |
| HL | Databases and database networking |
| HN | Electronic journals |
| HO | Electronic books |
| HQ | Web pages |
| HR | Portals (web pages) |
| HS | Institutional repositories |
| \ HSA | Open Archives Initiative compliance |
| I | Information treatment for information services |
| IA | Cataloging, bibliographic control |
| IB | Content analysis |
| \ IBA | Content analysis in abstracting and indexing |
| \ IBB | Classification and classification schemes |
| IC | Index languages, processes and schemes |
| ID | Data and metadata structures |
| IE | Knowledge representation |
| IF | Information retrieval |
| \ IFA | Information transfer protocols |
| \ IFB | Information transfer formats |
| \ IFC | Information transfer techniques |
| IG | Information presentation, hypertext and hypermedia |
| IH | Image systems |
| II | Filtering |
| IJ | Reference linking |
| IK | Design, development, implentation and maintenance |
| \ IKA | Information systems design and development |
| \ IKB | Information systems maintenance |
| J | Technical services |
| JA | Acquisitions |
| \ JAA | Collection development |
| \ JAB | Vendor cataloging |
| JB | Serials management |
| \ JBA | Serials cataloging |
| \ JBB | Continuing resources |
| JC | Withdrawals |
| JD | Stocktaking, inventory control |
| JE | Record keeping |
| JF | Paper preservation |
| JG | Digitization |
| JH | Digital preservation |
| JI | Circulation |
| JJ | Document delivery |
| JK | Interlibrary loan |
| K | Housing technologies |
| KA | Resource centers |
| KB | Library, archive and museum buildings |
| KC | Furniture |
| KD | Vehicles |
| KE | Architecture |
| KF | Facility design, planning, removal |
| KG | Safety |
| KH | Disaster planning |
| L | Information and library technology |
| LA | Telecommunications |
| LB | Computer networking |
| LC | Internet (and World Wide Web) |
| LD | Computers |
| LE | Scanners |
| LF | Digital cameras |
| LG | Photocopiers |
| LH | Computer and network security |
| LI | Authentication and network security |
| LJ | Computer software |
| LK | Computer software methodologies and engineering |
| LL | Automated language processing |
| LM | Automatic text retrieval |
| LN | Database management systems |
| LO | Object-oriented database management systems |
| LP | Intelligent agents |
| LQ | Library automation systems |
| \ LQA | Integrated library systems |
| LR | OPAC systems |
| LS | Search engines |
| M | Patron services |
| MA | Reference services |
| \ MAA | Online reference |
| MB | Programming and event planning |
| MC | Intercultural relations |
| R | Reviews |
| RA | Audio-visual reviews |
| \ RAA | Audio-visual reviews, for adults |
| \ RAC | Audio-visual reviews, for children |
| \ RAY | Audio-visual reviews, for young adults |
| RB | Book reviews |
| \ RBA | Book reviews, for adults |
| \ RBC | Book reviews, for children |
| \ RBY | Book reviews, for young adults |
| RC | Serials reviews |
| \ RCA | Serials reviews, for adults |
| \ RCC | Serials reviews, for children |
| \ RCY | Serials reviews, for young adults |
| RE | Electronic resources reviews |
| \ REA | Electronic resources reviews, for adults |
| \ REC | Electronic resources reviews, for children |
| \ REY | Electronic resources reviews, for young adults |
