Classification
000 - Computer science, information & general works
330 - Economics
340 - Law
600 - Technology
700 - The arts; fine & decorative arts
333 - Economics of land & energy
4
610 - Medicine & health
3
620 - Engineering & allied operations
3
363 - Other social problems & services
2
370 - Education
2
630 - Agriculture & related technologies
2
900 - History & geography
2
140 - Specific philosophical schools
1
200 - Religion
1
304 - Factors affecting social behavior
1
350 - Public administration & military science
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
658 - General management
1