Classification
000 - Computer science, information & general works
170 - Ethics
370 - Education
380 - Commerce, communications & transportation
610 - Medicine & health
4
140 - Specific philosophical schools
3
600 - Technology
3
900 - History & geography
2
100 - Philosophy & psychology
1
200 - Religion
1
320 - Political science
1
330 - Economics
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
400 - Language
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
658 - General management
1
700 - The arts; fine & decorative arts
1