Classification
330 - Economics
31
820 - English & Old English literatures
28
320 - Political science
24
900 - History & geography
17
340 - Law
14
004 - Data processing & computer science
9
510 - Mathematics
9
304 - Factors affecting social behavior
8
700 - The arts; fine & decorative arts
8
512 - Algebra
7
006 - Special computer methods
6
333 - Economics of land & energy
6
005 - Computer programming, programs & data
4
140 - Specific philosophical schools
4
341 - Law of nations
4
610 - Medicine & health
4
305 - Social groups
3
519 - Probabilities & applied mathematics
3
539 - Modern physics
3
658 - General management
3
720 - Architecture
3
000 - Computer science, information & general works
2
020 - Library & information sciences
2
100 - Philosophy & psychology
2
230 - Christianity & Christian theology
2
301 - Sociology & anthropology
2
337 - International economics
2
338 - Production
2
363 - Other social problems & services
2
370 - Education
2
380 - Commerce, communications & transportation
2
400 - Language
2
418 - Standard usage & applied linguistics
2
541 - Physical chemistry
2
576 - Genetics & evolution
2
616 - Diseases
2
618 - Gynecology, obstetrics, pediatrics & geriatrics
2
621 - Applied physics
2
660 - Chemical engineering
2
750 - Painting & paintings
2
780 - Music
2
808 - Rhetoric & collections of literature
2
940 - History of Europe
2
003 - Systems
1
120 - Epistemology, causation & humankind
1
200 - Religion
1
260 - Social & ecclesiastical theology
1
270 - History of Christianity & Christian church
1
280 - Christian denominations & sects
1
300 - Social sciences
1
more ...