Classification
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523 - Specific celestial bodies & phenomena
283
370 - Education
279
547 - Organic chemistry
279
371 - Schools & their activities; special education
276
631 - Techniques, equipment & materials
256
307 - Communities
244
510 - Mathematics
239
512 - Algebra
229
500 - Natural sciences & mathematics
225
300 - Social sciences
214
576 - Genetics & evolution
213
516 - Geometry
205
543 - Analytical chemistry
204
061 - Organizations in North America
201
025 - Library operations
195
511 - General principles of mathematics
193
062 - Organizations in British Isles; in England
188
581 - Specific topics in natural history
185
930 - History of ancient world to ca. 499
181
301 - Sociology & anthropology
174
691 - Building materials
168
418 - Standard usage & applied linguistics
159
332 - Financial economics
157
531 - Classical mechanics; solid mechanics
155
303 - Social processes
154
720 - Architecture
146
535 - Light & infrared & ultraviolet phenomena
144
611 - Human anatomy, cytology & histology
143
537 - Electricity & electronics
132
155 - Differential & developmental psychology
116
340 - Law
115
364 - Criminology
113
599 - Mammals
108
361 - Social problems & social welfare in general
107
378 - Higher education
104
150 - Psychology
103
302 - Social interaction
103
696 - Utilities
89
057 - Serials in Slavic languages
84
341 - Law of nations
83
809 - History, description & criticism
81
344 - Labor, social, education & cultural law
77
560 - Paleontology; paleozoology
76
634 - Orchards, fruits & forestry
76
343 - Military, tax, trade & industrial law
72
592 - Invertebrates
70
526 - Mathematical geography
69
546 - Inorganic chemistry
66
578 - Natural history of organisms
66
549 - Mineralogy
64
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