Classification
000 - Computer science, information & general works
330 - Economics
2
361 - Social problems & social welfare in general
380 - Commerce, communications & transportation
610 - Medicine & health
140 - Specific philosophical schools
1
170 - Ethics
1
200 - Religion
1
363 - Other social problems & services
1
370 - Education
1
600 - Technology
1
612 - Human physiology
1
658 - General management
1