Classification
551 - Geology, hydrology & meteorology
363 - Other social problems & services
321
700 - The arts; fine & decorative arts
143
000 - Computer science, information & general works
142
333 - Economics of land & energy
140
330 - Economics
130
600 - Technology
118
320 - Political science
105
620 - Engineering & allied operations
87
900 - History & geography
73
380 - Commerce, communications & transportation
66
140 - Specific philosophical schools
63
610 - Medicine & health
62
630 - Agriculture & related technologies
59
580 - Plants (Botany)
58
581 - Specific topics in natural history
51
576 - Genetics & evolution
27
370 - Education
26
500 - Natural sciences & mathematics
22
414 - Phonology & phonetics
19
658 - General management
18
304 - Factors affecting social behavior
17
720 - Architecture
17
340 - Law
15
800 - Literature & rhetoric
15
540 - Chemistry & allied sciences
14
300 - Social sciences
13
530 - Physics
8
100 - Philosophy & psychology
5
170 - Ethics
5
361 - Social problems & social welfare in general
5
550 - Earth sciences
5
200 - Religion
4
350 - Public administration & military science
3
297 - Islam, Babism & Bahai Faith
2
400 - Language
2
612 - Human physiology
2
770 - Photography, photographs & computer art
2
120 - Epistemology, causation & humankind
1
336 - Public finance
1
360 - Social problems & services; associations
1
364 - Criminology
1
410 - Linguistics
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
791 - Public performances
1