1.		Agriculture
2.		Auxiliary Sciences of History
3.		Bibliography. Library Science. Information Resources (General)
4.		Education
5.		Fine Arts
6.		General Works
7.		Geography. Anthropology. Recreation
8.		History (General) and History of Europe
9.		History: America
10.		Language and Literature
11.		Law
12.		Medicine
13.		Military Science
14.		Music and Books on Music
15.		Naval Science
16.		Philosophy. Psychology. Religion
17.		Political Science
18.		Science
19.		Social Sciences
20.		Technology