A - General Works 6 查看记录 B - Philosophy, Psychology, Religion 7,412 查看记录 C - Historical Sciences 506 查看记录 D - World History 1,861 查看记录 E - United States History 24 查看记录 F - General American History 9 查看记录 G - Geography, Anthropology, Recreation 986 查看记录 H - Social Science 8,984 查看记录 J - Political Science 917 查看记录 K - Law 755 查看记录 L - Education 7,287 查看记录 M - Music 52 查看记录 N - Fine Arts 369 查看记录 P - Language and Literature 6,383 查看记录 Q - Science 10,988 查看记录 R - Medicine 1,633 查看记录 S - Agriculture 852 查看记录 T - Technology 10,204 查看记录 U - Military Science 193 查看记录 V - Naval Science 15 查看记录 Z - Library Science 621 查看记录