Classification
610 - Medicine & health
100
700 - The arts; fine & decorative arts
69
000 - Computer science, information & general works
52
600 - Technology
43
333 - Economics of land & energy
41
300 - Social sciences
39
330 - Economics
35
370 - Education
32
380 - Commerce, communications & transportation
32
140 - Specific philosophical schools
25
363 - Other social problems & services
25
900 - History & geography
24
100 - Philosophy & psychology
19
320 - Political science
19
580 - Plants (Botany)
17
620 - Engineering & allied operations
15
340 - Law
10
551 - Geology, hydrology & meteorology
10
630 - Agriculture & related technologies
10
301 - Sociology & anthropology
8
612 - Human physiology
8
780 - Music
8
304 - Factors affecting social behavior
7
581 - Specific topics in natural history
7
770 - Photography, photographs & computer art
7
800 - Literature & rhetoric
6
500 - Natural sciences & mathematics
5
658 - General management
5
820 - English & Old English literatures
5
170 - Ethics
4
200 - Religion
4
400 - Language
4
410 - Linguistics
4
778 - Fields & kinds of photography
4
006 - Special computer methods
3
540 - Chemistry & allied sciences
3
576 - Genetics & evolution
3
160 - Logic
2
306 - Culture & institutions
2
361 - Social problems & social welfare in general
2
414 - Phonology & phonetics
2
004 - Data processing & computer science
1
005 - Computer programming, programs & data
1
010 - Bibliography
1
128 - Humankind
1
153 - Mental processes & intelligence
1
296 - Judaism
1
331 - Labor economics
1
339 - Macroeconomics & related topics
1
360 - Social problems & services; associations
1
more ...