Classification
900 - History & geography
35
300 - Social sciences
23
700 - The arts; fine & decorative arts
21
340 - Law
18
330 - Economics
16
320 - Political science
14
370 - Education
14
610 - Medicine & health
13
800 - Literature & rhetoric
13
363 - Other social problems & services
11
982 - Argentina
10
304 - Factors affecting social behavior
9
410 - Linguistics
9
600 - Technology
8
100 - Philosophy & psychology
7
400 - Language
7
301 - Sociology & anthropology
5
000 - Computer science, information & general works
4
128 - Humankind
4
200 - Religion
4
140 - Specific philosophical schools
3
305 - Social groups
3
306 - Culture & institutions
3
336 - Public finance
3
500 - Natural sciences & mathematics
3
658 - General management
3
307 - Communities
2
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
381 - Commerce
2
720 - Architecture
2
780 - Music
2
791 - Public performances
2
809 - History, description & criticism
2
860 - Spanish & Portuguese literatures
2
027 - General libraries
1
120 - Epistemology, causation & humankind
1
126 - The self
1
321 - Systems of governments & states
1
338 - Production
1
362 - Social welfare problems & services
1
364 - Criminology
1
530 - Physics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
640 - Home & family management
1
657 - Accounting
1
670 - Manufacturing
1
704 - Special topics in fine & decorative arts
1
more ...