Classification
580 - Plants (Botany)
000 - Computer science, information & general works
157
600 - Technology
142
610 - Medicine & health
139
700 - The arts; fine & decorative arts
136
333 - Economics of land & energy
125
630 - Agriculture & related technologies
108
620 - Engineering & allied operations
107
363 - Other social problems & services
98
330 - Economics
84
581 - Specific topics in natural history
56
551 - Geology, hydrology & meteorology
51
900 - History & geography
45
140 - Specific philosophical schools
43
380 - Commerce, communications & transportation
37
540 - Chemistry & allied sciences
30
576 - Genetics & evolution
29
658 - General management
28
414 - Phonology & phonetics
18
500 - Natural sciences & mathematics
18
615 - Pharmacology & therapeutics
17
720 - Architecture
15
800 - Literature & rhetoric
15
320 - Political science
13
612 - Human physiology
11
304 - Factors affecting social behavior
10
340 - Law
10
300 - Social sciences
6
361 - Social problems & social welfare in general
6
530 - Physics
6
370 - Education
5
100 - Philosophy & psychology
3
410 - Linguistics
3
170 - Ethics
2
520 - Astronomy & allied sciences
2
590 - Animals (Zoology)
2
650 - Management & auxiliary services
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
336 - Public finance
1
400 - Language
1
550 - Earth sciences
1
657 - Accounting
1
770 - Photography, photographs & computer art
1