Classification
prev ...
570 - Life sciences; biology
346
380 - Commerce, communications & transportation
344
516 - Geometry
343
518 - Numerical analysis
322
670 - Manufacturing
292
580 - Plants (Botany)
291
618 - Gynecology, obstetrics, pediatrics & geriatrics
286
613 - Personal health & safety
282
100 - Philosophy & psychology
271
536 - Heat
266
140 - Specific philosophical schools
246
546 - Inorganic chemistry
245
624 - Civil engineering
245
576 - Genetics & evolution
241
630 - Agriculture & related technologies
240
340 - Law
222
535 - Light & infrared & ultraviolet phenomena
222
745 - Decorative arts
222
040 - [Unassigned]
209
338 - Production
208
614 - Incidence & prevention of disease
205
384 - Communications; telecommunication
192
306 - Culture & institutions
161
664 - Food technology
160
301 - Sociology & anthropology
159
690 - Buildings
156
511 - General principles of mathematics
153
641 - Food & drink
142
794 - Indoor games of skill
141
538 - Magnetism
138
720 - Architecture
135
302 - Social interaction
131
514 - Topology
122
062 - Organizations in British Isles; in England
121
509 - Historical, geographic & persons treatment
121
150 - Psychology
120
170 - Ethics
120
548 - Crystallography
119
534 - Sound & related vibrations
115
631 - Techniques, equipment & materials
108
579 - Microorganisms, fungi & algae
106
800 - Literature & rhetoric
104
628 - Sanitary & municipal engineering
98
581 - Specific topics in natural history
97
374 - Adult education
94
155 - Differential & developmental psychology
90
526 - Mathematical geography
87
549 - Mineralogy
85
650 - Management & auxiliary services
85
371 - Schools & their activities; special education
81
more ...