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Subject (Genre)
- Congresses179
- Periodicals170
- Case studies64
- Statistics31
- Bibliography23
- Electronic books21
- Cross-cultural studies17
- Databases7
- Documentary films7
- Nonfiction films6
- Maps5
- Catalogs4
- Handbooks, manuals, etc4
- Periodical4
- Biography3
- Conference proceedings3
- Directories3
- Documentary television programs3
- Educational films3
- Longitudinal studies3