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Subject (Genre)
- Early works to 18006,584
- Periodicals5,336
- Congresses3,081
- Periodical1,923
- Biography1,907
- Internet videos1,317
- Bibliography1,309
- Handbooks, manuals, etc1,118
- Dictionaries925
- History695
- Conference papers and proceedings617
- Electronic books582
- Formulae, receipts, prescriptions578
- Educational films560
- Nonfiction films560
- Examinations, questions, etc534
- Catalogs514
- Case studies469
- Broadsides455
- Examination Questions448