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Subject (Genre)
- Periodicals89
- Congresses70
- Electronic books45
- Handbooks, manuals, etc28
- Internet videos24
- Software20
- Educational films16
- Instructional films14
- Case studies13
- Nonfiction films11
- Study guides11
- Electronic book7
- Audiobooks6
- Charts, diagrams, etc6
- Databases6
- Statistics6
- Bibliography5
- Periodical5
- Rules and practice5
- Conference papers and proceedings4