Classification
000 - Computer science, information & general works
530 - Physics
658 - General management
380 - Commerce, communications & transportation
7
333 - Economics of land & energy
6
700 - The arts; fine & decorative arts
6
330 - Economics
4
363 - Other social problems & services
3
140 - Specific philosophical schools
2
340 - Law
2
370 - Education
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
610 - Medicine & health
2
300 - Social sciences
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
630 - Agriculture & related technologies
1