Classification
330 - Economics
1,889
616 - Diseases
1,194
621 - Applied physics
893
620 - Engineering & allied operations
873
610 - Medicine & health
834
006 - Special computer methods
728
333 - Economics of land & energy
722
005 - Computer programming, programs & data
608
004 - Data processing & computer science
576
658 - General management
556
320 - Political science
443
670 - Manufacturing
437
600 - Technology
426
745 - Decorative arts
377
617 - Surgery & related medical specialties
365
331 - Labor economics
290
000 - Computer science, information & general works
277
370 - Education
272
571 - Physiology & related subjects
256
300 - Social sciences
237
340 - Law
222
500 - Natural sciences & mathematics
206
338 - Production
193
900 - History & geography
183
363 - Other social problems & services
182
700 - The arts; fine & decorative arts
179
629 - Other branches of engineering
157
304 - Factors affecting social behavior
156
380 - Commerce, communications & transportation
155
003 - Systems
152
570 - Life sciences; biology
144
614 - Incidence & prevention of disease
135
572 - Biochemistry
133
615 - Pharmacology & therapeutics
133
519 - Probabilities & applied mathematics
132
613 - Personal health & safety
128
530 - Physics
127
612 - Human physiology
121
720 - Architecture
107
580 - Plants (Botany)
103
660 - Chemical engineering
98
741 - Drawing & drawings
92
001 - Knowledge
91
650 - Management & auxiliary services
85
362 - Social welfare problems & services
84
551 - Geology, hydrology & meteorology
84
302 - Social interaction
83
579 - Microorganisms, fungi & algae
76
140 - Specific philosophical schools
75
540 - Chemistry & allied sciences
75
more ...