Classification
000 - Computer science, information & general works
1
004 - Data processing & computer science
2
005 - Computer programming, programs & data
5
304 - Factors affecting social behavior
4
306 - Culture & institutions
1
307 - Communities
1
330 - Economics
2
331 - Labor economics
1
333 - Economics of land & energy
11
338 - Production
3
340 - Law
2
342 - Constitutional & administrative law
2
343 - Military, tax, trade & industrial law
19
346 - Private law
4
351 - Public administration
1
352 - General considerations of public administration
12
363 - Other social problems & services
7
370 - Education
1
519 - Probabilities & applied mathematics
2
531 - Classical mechanics; solid mechanics
1
534 - Sound & related vibrations
1
536 - Heat
2
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
4
613 - Personal health & safety
2
620 - Engineering & allied operations
19
621 - Applied physics
8
624 - Civil engineering
232
627 - Hydraulic engineering
1
628 - Sanitary & municipal engineering
3
629 - Other branches of engineering
11
650 - Management & auxiliary services
6
658 - General management
61
670 - Manufacturing
7
690 - Buildings
247
691 - Building materials
14
693 - Specific materials & purposes
3
696 - Utilities
8
697 - Heating, ventilating & air-conditioning
3
720 - Architecture
10
725 - Public structures
2
745 - Decorative arts
1