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Subject (Genre)
- Congresses86
- Periodicals44
- Legislative hearings27
- Case studies10
- Documentary television programs10
- Study guides7
- Electronic books6
- Bibliography5
- Conference papers and proceedings5
- Environmental television programs5
- Pictorial works5
- Government publications4
- Handbooks, manuals, etc4
- Juvenile literature4
- Maps4
- Nonfiction television programs4
- Posters4
- Biography3
- Cases3
- Commercial treaties3