Classification
370 - Education
11,095
330 - Economics
6,548
610 - Medicine & health
2,574
658 - General management
2,245
320 - Political science
2,049
300 - Social sciences
1,749
005 - Computer programming, programs & data
1,686
006 - Special computer methods
1,643
004 - Data processing & computer science
1,294
371 - Schools & their activities; special education
1,270
616 - Diseases
1,262
600 - Technology
1,204
333 - Economics of land & energy
1,119
304 - Factors affecting social behavior
1,112
301 - Sociology & anthropology
1,094
306 - Culture & institutions
1,017
900 - History & geography
911
621 - Applied physics
880
700 - The arts; fine & decorative arts
843
620 - Engineering & allied operations
809
500 - Natural sciences & mathematics
794
100 - Philosophy & psychology
725
338 - Production
710
510 - Mathematics
703
000 - Computer science, information & general works
672
331 - Labor economics
638
820 - English & Old English literatures
595
378 - Higher education
576
302 - Social interaction
552
340 - Law
542
305 - Social groups
537
363 - Other social problems & services
490
380 - Commerce, communications & transportation
482
374 - Adult education
450
650 - Management & auxiliary services
424
418 - Standard usage & applied linguistics
377
400 - Language
365
379 - Public policy issues in education
354
519 - Probabilities & applied mathematics
351
617 - Surgery & related medical specialties
348
361 - Social problems & social welfare in general
340
670 - Manufacturing
334
140 - Specific philosophical schools
330
170 - Ethics
327
530 - Physics
305
150 - Psychology
304
200 - Religion
289
158 - Applied psychology
286
332 - Financial economics
284
629 - Other branches of engineering
280
more ...