Classification
610 - Medicine & health
21
612 - Human physiology
6
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
613 - Personal health & safety
3
600 - Technology
2
658 - General management
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
330 - Economics
1
370 - Education
1
394 - General customs
1
576 - Genetics & evolution
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
630 - Agriculture & related technologies
1