Classification
140 - Specific philosophical schools
200 - Religion
320 - Political science
8
370 - Education
6
700 - The arts; fine & decorative arts
6
900 - History & geography
5
333 - Economics of land & energy
4
340 - Law
4
100 - Philosophy & psychology
3
170 - Ethics
3
297 - Islam, Babism & Bahai Faith
3
330 - Economics
3
304 - Factors affecting social behavior
2
400 - Language
2
410 - Linguistics
2
576 - Genetics & evolution
2
610 - Medicine & health
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
301 - Sociology & anthropology
1
360 - Social problems & services; associations
1
364 - Criminology
1
380 - Commerce, communications & transportation
1
398 - Folklore
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
600 - Technology
1
630 - Agriculture & related technologies
1
770 - Photography, photographs & computer art
1