Classification
340 - Law
212
330 - Economics
35
320 - Political science
33
346 - Private law
16
570 - Life sciences; biology
5
331 - Labor economics
3
362 - Social welfare problems & services
2
338 - Production
1
343 - Military, tax, trade & industrial law
1
344 - Labor, social, education & cultural law
1
607 - Education, research & related topics
1
608 - Inventions & patents
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1
658 - General management
1
661 - Industrial chemicals
1