Classification
000 - Computer science, information & general works
6
001 - Knowledge
1
005 - Computer programming, programs & data
2
140 - Specific philosophical schools
4
300 - Social sciences
1
302 - Social interaction
1
320 - Political science
1
330 - Economics
9
331 - Labor economics
2
333 - Economics of land & energy
1
338 - Production
1
343 - Military, tax, trade & industrial law
1
362 - Social welfare problems & services
2
363 - Other social problems & services
3
370 - Education
1
380 - Commerce, communications & transportation
2
381 - Commerce
1
384 - Communications; telecommunication
3
387 - Water, air & space transportation
1
400 - Language
1
500 - Natural sciences & mathematics
6
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
2
580 - Plants (Botany)
1
600 - Technology
6
610 - Medicine & health
2
620 - Engineering & allied operations
624 - Civil engineering
1
629 - Other branches of engineering
1
658 - General management
700 - The arts; fine & decorative arts
4
720 - Architecture
1
745 - Decorative arts
1
770 - Photography, photographs & computer art
1
780 - Music
1
900 - History & geography
6