Q - Science 760 H - Social Science 654 B - Philosophy, Psychology, Religion 197 P - Language and Literature 177 D - World History 138 R - Medicine 116 Z - Library Science 103 A - General Works 54 T - Technology 43 G - Geography, Anthropology, Recreation 39 K - Law 37 N - Fine Arts 36 S - Agriculture 31 J - Political Science 29 E - United States History 19 F - General American History 16 L - Education 12 M - Music 10 C - Historical Sciences 6 U - Military Science 2