Classification
000 - Computer science, information & general works
576 - Genetics & evolution
620 - Engineering & allied operations
30
900 - History & geography
600 - Technology
29
700 - The arts; fine & decorative arts
23
333 - Economics of land & energy
21
330 - Economics
11
380 - Commerce, communications & transportation
9
720 - Architecture
7
363 - Other social problems & services
5
610 - Medicine & health
5
140 - Specific philosophical schools
4
400 - Language
3
500 - Natural sciences & mathematics
3
658 - General management
3
370 - Education
2
580 - Plants (Botany)
2
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
320 - Political science
1
340 - Law
1
410 - Linguistics
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1