Classification
600 - Technology
464
700 - The arts; fine & decorative arts
451
000 - Computer science, information & general works
355
620 - Engineering & allied operations
349
333 - Economics of land & energy
318
900 - History & geography
310
380 - Commerce, communications & transportation
160
363 - Other social problems & services
136
610 - Medicine & health
135
576 - Genetics & evolution
129
330 - Economics
128
500 - Natural sciences & mathematics
112
140 - Specific philosophical schools
85
580 - Plants (Botany)
83
720 - Architecture
52
658 - General management
41
630 - Agriculture & related technologies
39
340 - Law
37
530 - Physics
37
551 - Geology, hydrology & meteorology
36
320 - Political science
33
400 - Language
32
370 - Education
24
800 - Literature & rhetoric
23
540 - Chemistry & allied sciences
22
414 - Phonology & phonetics
20
300 - Social sciences
15
100 - Philosophy & psychology
12
410 - Linguistics
8
581 - Specific topics in natural history
8
170 - Ethics
7
550 - Earth sciences
7
612 - Human physiology
7
650 - Management & auxiliary services
7
770 - Photography, photographs & computer art
5
780 - Music
5
304 - Factors affecting social behavior
3
615 - Pharmacology & therapeutics
3
657 - Accounting
3
120 - Epistemology, causation & humankind
2
160 - Logic
2
301 - Sociology & anthropology
2
361 - Social problems & social welfare in general
2
520 - Astronomy & allied sciences
2
791 - Public performances
2
297 - Islam, Babism & Bahai Faith
1
364 - Criminology
1
920 - Biography, genealogy & insignia
1