Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
330 - Economics
361 - Social problems & social welfare in general
600 - Technology
3
610 - Medicine & health
333 - Economics of land & energy
2
700 - The arts; fine & decorative arts
2
170 - Ethics
1
200 - Religion
1
320 - Political science
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
620 - Engineering & allied operations
1
658 - General management
1