A - General Works 7,584 查看记录 B - Philosophy, Psychology, Religion 40,894 查看记录 C - Historical Sciences 14,599 查看记录 D - World History 51,709 查看记录 E - United States History 8,131 查看记录 F - General American History 12,146 查看记录 G - Geography, Anthropology, Recreation 26,098 查看记录 H - Social Science 187,906 查看记录 J - Political Science 26,463 查看记录 K - Law 22,740 查看记录 L - Education 94,231 查看记录 M - Music 20,199 查看记录 N - Fine Arts 21,444 查看记录 P - Language and Literature 121,476 查看记录 Q - Science 93,169 查看记录 R - Medicine 39,794 查看记录 S - Agriculture 13,746 查看记录 T - Technology 51,652 查看记录 U - Military Science 2,500 查看记录 V - Naval Science 3,226 查看记录 Z - Library Science 10,075 查看记录