Ταξιθετικός Αριθμός Συγγραφέας Θέμα Είδος Χώρα / Περιοχή Χρονική Περίοδος

A - General Works 12 B - Philosophy, Psychology, Religion 294 C - Historical Sciences 20 D - World History 212 E - United States History 5 G - Geography, Anthropology, Recreation 324 H - Social Science 1,077 J - Political Science 80 K - Law 108 L - Education 59 M - Music 13 N - Fine Arts 620 P - Language and Literature 344 Q - Science 3,722 R - Medicine 79 S - Agriculture 63 T - Technology 3,260 U - Military Science 9 V - Naval Science 18 Z - Library Science 65