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Subject (Genre)
- Periodicals313
- Congresses168
- Academic theses101
- Observations68
- Maps67
- Bibliography65
- Documentary films28
- Alexander Street Video26
- Charts, diagrams, etc24
- Dictionaries24
- Handbooks, manuals, etc23
- Conference papers and proceedings20
- Abstracts18
- Catalogs18
- Electronic books15
- Databases13
- History11
- Biography8
- Directories8
- Documentary8