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Subject (Genre)
- Internet videos818
- Periodicals480
- Congresses464
- Electronic books274
- Educational films225
- Documentary films201
- Case studies185
- Biography150
- History145
- Bibliography89
- Data sets83
- Directories81
- Handbooks, manuals, etc71
- Nonfiction films58
- Interviews51
- Cases45
- Television news programs45
- Dictionaries43
- Exhibitions43
- Feature films42