Classification
370 - Education
11,070
330 - Economics
3,108
371 - Schools & their activities; special education
1,268
320 - Political science
1,260
300 - Social sciences
1,003
610 - Medicine & health
935
306 - Culture & institutions
691
700 - The arts; fine & decorative arts
608
900 - History & geography
593
333 - Economics of land & energy
587
378 - Higher education
570
510 - Mathematics
551
100 - Philosophy & psychology
532
006 - Special computer methods
530
304 - Factors affecting social behavior
513
600 - Technology
464
658 - General management
384
005 - Computer programming, programs & data
380
004 - Data processing & computer science
378
418 - Standard usage & applied linguistics
360
379 - Public policy issues in education
352
500 - Natural sciences & mathematics
291
305 - Social groups
285
400 - Language
271
301 - Sociology & anthropology
269
507 - Education, research & related topics
258
363 - Other social problems & services
257
380 - Commerce, communications & transportation
242
340 - Law
233
000 - Computer science, information & general works
221
140 - Specific philosophical schools
212
372 - Elementary education
211
200 - Religion
190
620 - Engineering & allied operations
188
361 - Social problems & social welfare in general
186
374 - Adult education
185
530 - Physics
169
170 - Ethics
162
519 - Probabilities & applied mathematics
144
150 - Psychology
141
616 - Diseases
135
302 - Social interaction
129
260 - Social & ecclesiastical theology
119
540 - Chemistry & allied sciences
117
410 - Linguistics
114
338 - Production
113
650 - Management & auxiliary services
112
800 - Literature & rhetoric
98
621 - Applied physics
95
158 - Applied psychology
91
more ...