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- Electronic books5,234
- Periodicals4,632
- Congresses4,255
- Biography3,655
- Case studies2,951
- Statistics2,062
- Handbooks, manuals, etc1,474
- History1,415
- Directories1,186
- Cross-cultural studies1,060
- Curricula1,026
- Sources923
- Bibliography511
- Pictorial works342
- Dictionaries305
- Catalogs284
- Early works to 1800277
- Registers248
- Interviews234
- Tracts (literary genre)208