Classification
900 - History & geography
4
362 - Social welfare problems & services
2
951 - China & adjacent areas
2
004 - Data processing & computer science
1
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
160 - Logic
1
170 - Ethics
1
200 - Religion
1
306 - Culture & institutions
1
320 - Political science
1
321 - Systems of governments & states
1
324 - The political process
1
327 - International relations
1
384 - Communications; telecommunication
1
394 - General customs
1
430 - Germanic languages; German
1
629 - Other branches of engineering
1
780 - Music
1
800 - Literature & rhetoric
1
929 - Genealogy, names & insignia
1