Classification
700 - The arts; fine & decorative arts
600 - Technology
239
620 - Engineering & allied operations
179
000 - Computer science, information & general works
163
333 - Economics of land & energy
161
900 - History & geography
139
610 - Medicine & health
90
580 - Plants (Botany)
77
330 - Economics
71
363 - Other social problems & services
71
380 - Commerce, communications & transportation
68
576 - Genetics & evolution
63
500 - Natural sciences & mathematics
49
540 - Chemistry & allied sciences
45
414 - Phonology & phonetics
43
140 - Specific philosophical schools
40
340 - Law
29
530 - Physics
25
720 - Architecture
24
551 - Geology, hydrology & meteorology
23
320 - Political science
17
630 - Agriculture & related technologies
12
800 - Literature & rhetoric
11
581 - Specific topics in natural history
10
612 - Human physiology
10
304 - Factors affecting social behavior
9
658 - General management
8
370 - Education
5
400 - Language
5
300 - Social sciences
4
615 - Pharmacology & therapeutics
4
410 - Linguistics
3
170 - Ethics
2
100 - Philosophy & psychology
1
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
361 - Social problems & social welfare in general
1
550 - Earth sciences
1
650 - Management & auxiliary services
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
780 - Music
1