Classification
000 - Computer science, information & general works
130
001 - Knowledge
1
005 - Computer programming, programs & data
3
006 - Special computer methods
1
100 - Philosophy & psychology
17
115 - Time
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
46
160 - Logic
1
170 - Ethics
3
200 - Religion
5
262 - Ecclesiology
1
270 - History of Christianity & Christian church
1
280 - Christian denominations & sects
5
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
7
301 - Sociology & anthropology
5
304 - Factors affecting social behavior
12
320 - Political science
31
330 - Economics
58
333 - Economics of land & energy
81
340 - Law
15
344 - Labor, social, education & cultural law
1
361 - Social problems & social welfare in general
3
363 - Other social problems & services
80
370 - Education
13
380 - Commerce, communications & transportation
39
400 - Language
11
410 - Linguistics
6
414 - Phonology & phonetics
9
415 - Grammar
5
491 - East Indo-European & Celtic languages
2
492 - Afro-Asiatic languages; Semitic languages
1
500 - Natural sciences & mathematics
19
510 - Mathematics
2
511 - General principles of mathematics
1
519 - Probabilities & applied mathematics
1
530 - Physics
10
540 - Chemistry & allied sciences
7
550 - Earth sciences
5
551 - Geology, hydrology & meteorology
39
570 - Life sciences; biology
1
576 - Genetics & evolution
29
580 - Plants (Botany)
46
581 - Specific topics in natural history
14
600 - Technology
88
610 - Medicine & health
59
612 - Human physiology
6
616 - Diseases
1
620 - Engineering & allied operations
58
more ...