Classification
330 - Economics
4,790
005 - Computer programming, programs & data
3,207
320 - Political science
1,111
610 - Medicine & health
1,085
333 - Economics of land & energy
1,054
004 - Data processing & computer science
1,047
658 - General management
952
363 - Other social problems & services
902
006 - Special computer methods
858
620 - Engineering & allied operations
837
331 - Labor economics
808
340 - Law
722
621 - Applied physics
711
616 - Diseases
706
000 - Computer science, information & general works
564
600 - Technology
482
500 - Natural sciences & mathematics
473
304 - Factors affecting social behavior
444
338 - Production
413
300 - Social sciences
408
700 - The arts; fine & decorative arts
406
571 - Physiology & related subjects
395
630 - Agriculture & related technologies
364
551 - Geology, hydrology & meteorology
360
577 - Ecology
330
341 - Law of nations
286
900 - History & geography
283
580 - Plants (Botany)
278
380 - Commerce, communications & transportation
253
332 - Financial economics
244
003 - Systems
218
140 - Specific philosophical schools
203
384 - Communications; telecommunication
161
343 - Military, tax, trade & industrial law
156
617 - Surgery & related medical specialties
155
628 - Sanitary & municipal engineering
155
370 - Education
151
615 - Pharmacology & therapeutics
151
302 - Social interaction
149
570 - Life sciences; biology
148
364 - Criminology
139
612 - Human physiology
137
540 - Chemistry & allied sciences
134
660 - Chemical engineering
134
342 - Constitutional & administrative law
133
670 - Manufacturing
130
572 - Biochemistry
129
374 - Adult education
128
344 - Labor, social, education & cultural law
120
306 - Culture & institutions
119
more ...