| Type of information |
| Subcategories |
| Abbreviations | Academic Publications | Articles |
| Atlas | Audiovisual Multimedia | Biographies |
| Books | Case studies | CD ROM |
| Collections | Data bases | Dictionaries |
| Directory of electronic sites | Electronic Books | Electronic newspapers |
| Encyclopedias | Environmental Impacts Assessments Studies | Environmental Organizations' Bulletins |
| European Unions' official documents | Files | Films/Movies |
| Government documents | Guides to sources | Intergovernmetnal Agreements |
| International Agreements/Conventions | International organizations' official documents | International programs |
| Internet Information sources | Legislative Documents | Libraries |
| Limits | Magazines-Periodicals | Management Studies |
| Manuscript | Maps | Newsletter-Press Release |
| Newspapers | Official statistics | Patents |
| PhD thesis | Pictures - Images | Post graduate papers |
| Posters | Press Clippings | Proceedings |
| Professional Guides | Professional Unions' Bulletins | Programs |
| Regulations | Reports-References | Research Institutes |
| Research programs | Scientific Unions' Bulletins | Search engines on the Internet |
| Shopping Guides | Slides | Software |
| Statistics | United Nations official documents | Various documents |
| Various official documents | Video tapes |