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Subject (Genre)
- Congresses96
- Periodicals79
- Bibliography31
- Sources25
- Biography23
- History15
- Directories14
- Statistics14
- Case studies12
- Electronic books9
- Pictorial works8
- Maps6
- Handbooks, manuals, etc5
- Archives4
- Conference papers and proceedings3
- Documentary films3
- Documentary television programs3
- Fiction3
- Nonfiction films3
- Personal narratives3