Classification
380 - Commerce, communications & transportation
600 - Technology
4
000 - Computer science, information & general works
3
610 - Medicine & health
3
140 - Specific philosophical schools
2
333 - Economics of land & energy
2
620 - Engineering & allied operations
2
900 - History & geography
2
340 - Law
1
363 - Other social problems & services
1
414 - Phonology & phonetics
1
580 - Plants (Botany)
1
700 - The arts; fine & decorative arts
1