Classification
616 - Diseases
128
006 - Special computer methods
98
330 - Economics
86
610 - Medicine & health
76
620 - Engineering & allied operations
68
621 - Applied physics
60
005 - Computer programming, programs & data
59
658 - General management
53
000 - Computer science, information & general works
43
900 - History & geography
43
617 - Surgery & related medical specialties
42
004 - Data processing & computer science
41
333 - Economics of land & energy
41
500 - Natural sciences & mathematics
38
230 - Christianity & Christian theology
36
600 - Technology
36
571 - Physiology & related subjects
34
530 - Physics
33
700 - The arts; fine & decorative arts
29
820 - English & Old English literatures
28
300 - Social sciences
27
520 - Astronomy & allied sciences
26
572 - Biochemistry
24
331 - Labor economics
20
338 - Production
20
363 - Other social problems & services
18
519 - Probabilities & applied mathematics
18
629 - Other branches of engineering
18
003 - Systems
17
380 - Commerce, communications & transportation
16
550 - Earth sciences
16
320 - Political science
15
551 - Geology, hydrology & meteorology
15
576 - Genetics & evolution
15
001 - Knowledge
14
370 - Education
14
581 - Specific topics in natural history
14
612 - Human physiology
14
615 - Pharmacology & therapeutics
14
630 - Agriculture & related technologies
14
660 - Chemical engineering
14
670 - Manufacturing
14
240 - Christian moral & devotional theology
13
384 - Communications; telecommunication
13
540 - Chemistry & allied sciences
13
250 - Christian orders & local church
12
512 - Algebra
12
570 - Life sciences; biology
12
332 - Financial economics
11
140 - Specific philosophical schools
10
more ...