Classification
610 - Medicine & health
47
330 - Economics
9
362 - Social welfare problems & services
4
000 - Computer science, information & general works
3
370 - Education
3
380 - Commerce, communications & transportation
3
616 - Diseases
3
700 - The arts; fine & decorative arts
3
361 - Social problems & social welfare in general
2
372 - Elementary education
2
140 - Specific philosophical schools
1
170 - Ethics
1
333 - Economics of land & energy
1
340 - Law
1
572 - Biochemistry
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1
658 - General management
1