Classification
005 - Computer programming, programs & data
733
515 - Analysis
732
620 - Engineering & allied operations
671
530 - Physics
433
519 - Probabilities & applied mathematics
411
500 - Natural sciences & mathematics
390
616 - Diseases
373
512 - Algebra
336
621 - Applied physics
335
330 - Economics
332
006 - Special computer methods
317
658 - General management
316
004 - Data processing & computer science
304
900 - History & geography
288
629 - Other branches of engineering
276
610 - Medicine & health
270
300 - Social sciences
258
003 - Systems
231
331 - Labor economics
226
410 - Linguistics
211
400 - Language
175
516 - Geometry
175
551 - Geology, hydrology & meteorology
169
320 - Political science
161
511 - General principles of mathematics
159
510 - Mathematics
155
745 - Decorative arts
138
338 - Production
135
363 - Other social problems & services
133
571 - Physiology & related subjects
128
384 - Communications; telecommunication
126
333 - Economics of land & energy
118
001 - Knowledge
115
340 - Law
113
301 - Sociology & anthropology
112
700 - The arts; fine & decorative arts
109
541 - Physical chemistry
107
612 - Human physiology
97
305 - Social groups
94
304 - Factors affecting social behavior
92
617 - Surgery & related medical specialties
91
514 - Topology
90
539 - Modern physics
89
355 - Military science
87
518 - Numerical analysis
83
370 - Education
79
800 - Literature & rhetoric
74
306 - Culture & institutions
73
550 - Earth sciences
68
572 - Biochemistry
64
more ...