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Subject (Genre)
- Internet videos149
- Periodicals143
- Congresses84
- Dictionaries32
- Electronic books30
- Biography26
- Bibliography25
- Encyclopedias23
- Handbooks, manuals, etc21
- History21
- Cross-cultural studies17
- Periodical11
- Case studies10
- Directories10
- Sources7
- Academic theses6
- Early works to 18006
- Interviews6
- Educational films5
- Longitudinal studies5