Classification
700 - The arts; fine & decorative arts
279
600 - Technology
238
620 - Engineering & allied operations
186
333 - Economics of land & energy
185
900 - History & geography
180
330 - Economics
170
000 - Computer science, information & general works
165
610 - Medicine & health
149
363 - Other social problems & services
131
140 - Specific philosophical schools
97
380 - Commerce, communications & transportation
88
100 - Philosophy & psychology
79
370 - Education
78
500 - Natural sciences & mathematics
72
320 - Political science
70
530 - Physics
64
580 - Plants (Botany)
62
540 - Chemistry & allied sciences
53
576 - Genetics & evolution
43
200 - Religion
40
340 - Law
40
300 - Social sciences
39
551 - Geology, hydrology & meteorology
38
630 - Agriculture & related technologies
38
400 - Language
36
658 - General management
34
304 - Factors affecting social behavior
32
800 - Literature & rhetoric
31
170 - Ethics
26
414 - Phonology & phonetics
25
720 - Architecture
24
745 - Decorative arts
20
780 - Music
18
519 - Probabilities & applied mathematics
17
581 - Specific topics in natural history
17
301 - Sociology & anthropology
16
612 - Human physiology
16
410 - Linguistics
15
240 - Christian moral & devotional theology
14
770 - Photography, photographs & computer art
14
621 - Applied physics
13
520 - Astronomy & allied sciences
12
120 - Epistemology, causation & humankind
11
361 - Social problems & social welfare in general
11
297 - Islam, Babism & Bahai Faith
10
628 - Sanitary & municipal engineering
10
510 - Mathematics
9
615 - Pharmacology & therapeutics
9
791 - Public performances
8
331 - Labor economics
7
more ...