索引號 作者 主題 流派 地區 時代

A - General Works 8 B - Philosophy, Psychology, Religion 23 C - Historical Sciences 1 D - World History 5 E - United States History 2 F - General American History 29 G - Geography, Anthropology, Recreation 7 H - Social Science 51 J - Political Science 14 K - Law 7 L - Education 10 M - Music 32 N - Fine Arts 4 P - Language and Literature 71 Q - Science 7 R - Medicine 7 S - Agriculture 20 T - Technology 3 U - Military Science 1 V - Naval Science 1 Z - Library Science 1