Classification
530 - Physics
700 - The arts; fine & decorative arts
270
333 - Economics of land & energy
263
000 - Computer science, information & general works
258
620 - Engineering & allied operations
239
500 - Natural sciences & mathematics
139
600 - Technology
111
900 - History & geography
92
100 - Philosophy & psychology
86
380 - Commerce, communications & transportation
58
576 - Genetics & evolution
47
330 - Economics
46
540 - Chemistry & allied sciences
43
363 - Other social problems & services
42
610 - Medicine & health
41
140 - Specific philosophical schools
36
340 - Law
34
320 - Political science
30
580 - Plants (Botany)
28
200 - Religion
25
370 - Education
23
520 - Astronomy & allied sciences
21
120 - Epistemology, causation & humankind
19
539 - Modern physics
19
551 - Geology, hydrology & meteorology
19
170 - Ethics
18
800 - Literature & rhetoric
18
300 - Social sciences
15
510 - Mathematics
13
400 - Language
12
414 - Phonology & phonetics
12
658 - General management
12
630 - Agriculture & related technologies
10
301 - Sociology & anthropology
9
304 - Factors affecting social behavior
9
063 - Organizations in central Europe; in Germany
8
581 - Specific topics in natural history
8
006 - Special computer methods
7
410 - Linguistics
7
550 - Earth sciences
7
720 - Architecture
7
791 - Public performances
7
296 - Judaism
6
331 - Labor economics
6
780 - Music
6
003 - Systems
5
160 - Logic
5
519 - Probabilities & applied mathematics
4
621 - Applied physics
4
297 - Islam, Babism & Bahai Faith
3
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