Classification
610 - Medicine & health
620 - Engineering & allied operations
380 - Commerce, communications & transportation
3
600 - Technology
3
170 - Ethics
2
340 - Law
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
900 - History & geography
2
331 - Labor economics
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
660 - Chemical engineering
1
700 - The arts; fine & decorative arts
1