Classification
580 - Plants (Botany)
610 - Medicine & health
525
700 - The arts; fine & decorative arts
521
000 - Computer science, information & general works
461
600 - Technology
425
333 - Economics of land & energy
388
581 - Specific topics in natural history
342
620 - Engineering & allied operations
321
363 - Other social problems & services
267
900 - History & geography
209
330 - Economics
179
630 - Agriculture & related technologies
169
500 - Natural sciences & mathematics
148
140 - Specific philosophical schools
142
380 - Commerce, communications & transportation
136
551 - Geology, hydrology & meteorology
127
576 - Genetics & evolution
127
540 - Chemistry & allied sciences
89
612 - Human physiology
75
414 - Phonology & phonetics
74
720 - Architecture
45
615 - Pharmacology & therapeutics
44
800 - Literature & rhetoric
42
320 - Political science
35
658 - General management
35
340 - Law
33
304 - Factors affecting social behavior
29
370 - Education
29
530 - Physics
25
170 - Ethics
24
100 - Philosophy & psychology
19
300 - Social sciences
12
400 - Language
12
361 - Social problems & social welfare in general
9
590 - Animals (Zoology)
8
650 - Management & auxiliary services
5
410 - Linguistics
4
770 - Photography, photographs & computer art
4
780 - Music
4
200 - Religion
3
301 - Sociology & anthropology
3
520 - Astronomy & allied sciences
3
657 - Accounting
3
791 - Public performances
3
120 - Epistemology, causation & humankind
2
336 - Public finance
2
297 - Islam, Babism & Bahai Faith
1
398 - Folklore
1
550 - Earth sciences
1
572 - Biochemistry
1
more ...