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Subject (Genre)
- Congresses58
- Periodicals44
- Case studies43
- Bibliography18
- Electronic books14
- Statistics14
- Cross-cultural studies10
- Documentary films8
- Nonfiction films8
- Biography5
- Feature films5
- Pictorial works5
- Maps4
- Internet videos3
- Case Reports2
- Catalogs2
- Conference papers and proceedings2
- Documentaries and Factual Films2
- Documentary television programs2
- Educational films2