Classification
900 - History & geography
2
935 - Mesopotamia & Iranian Plateau to 637
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
193 - Philosophy of Germany & Austria
1
200 - Religion
1
271 - Religious orders in church history
1
301 - Sociology & anthropology
1
327 - International relations
1
333 - Economics of land & energy
1
507 - Education, research & related topics
1
576 - Genetics & evolution
1
609 - Historical, geographic & persons treatment
1
658 - General management
1
800 - Literature & rhetoric
1
850 - Italian, Romanian & related literatures
1
930 - History of ancient world to ca. 499
1
943 - Central Europe; Germany
1
950 - History of Asia; Far East
1
956 - Middle East (Near East)
1
995 - Melanesia; New Guinea
1