Classification
005 - Computer programming, programs & data
7,577
006 - Special computer methods
2,943
400 - Language
2,387
500 - Natural sciences & mathematics
2,156
004 - Data processing & computer science
1,734
420 - English & Old English
1,355
000 - Computer science, information & general works
1,270
410 - Linguistics
1,193
620 - Engineering & allied operations
813
331 - Labor economics
810
745 - Decorative arts
803
470 - Italic languages; Latin
746
830 - Literatures of Germanic languages
671
658 - General management
661
900 - History & geography
570
700 - The arts; fine & decorative arts
529
418 - Standard usage & applied linguistics
482
330 - Economics
379
808 - Rhetoric & collections of literature
377
440 - Romance languages; French
366
384 - Communications; telecommunication
306
370 - Education
302
401 - Philosophy & theory
269
800 - Literature & rhetoric
267
519 - Probabilities & applied mathematics
266
100 - Philosophy & psychology
238
490 - Other languages
236
320 - Political science
233
025 - Library operations
232
480 - Hellenic languages; classical Greek
229
380 - Commerce, communications & transportation
199
306 - Culture & institutions
196
510 - Mathematics
169
302 - Social interaction
167
794 - Indoor games of skill
163
600 - Technology
161
340 - Law
154
300 - Social sciences
151
621 - Applied physics
149
414 - Phonology & phonetics
148
415 - Grammar
147
430 - Germanic languages; German
131
491 - East Indo-European & Celtic languages
122
511 - General principles of mathematics
117
140 - Specific philosophical schools
114
149 - Other philosophical systems
113
610 - Medicine & health
113
333 - Economics of land & energy
109
374 - Adult education
101
200 - Religion
92
more ...