Classification
624 - Civil engineering
243
690 - Buildings
226
658 - General management
50
620 - Engineering & allied operations
20
343 - Military, tax, trade & industrial law
19
333 - Economics of land & energy
18
363 - Other social problems & services
13
691 - Building materials
13
352 - General considerations of public administration
12
629 - Other branches of engineering
11
720 - Architecture
9
621 - Applied physics
8
670 - Manufacturing
7
700 - The arts; fine & decorative arts
7
330 - Economics
6
600 - Technology
6
650 - Management & auxiliary services
6
696 - Utilities
6
005 - Computer programming, programs & data
5
551 - Geology, hydrology & meteorology
5
000 - Computer science, information & general works
4
346 - Private law
4
900 - History & geography
4
304 - Factors affecting social behavior
3
340 - Law
3
693 - Specific materials & purposes
3
004 - Data processing & computer science
2
338 - Production
2
342 - Constitutional & administrative law
2
400 - Language
2
519 - Probabilities & applied mathematics
2
536 - Heat
2
610 - Medicine & health
2
613 - Personal health & safety
2
628 - Sanitary & municipal engineering
2
725 - Public structures
2
306 - Culture & institutions
1
307 - Communities
1
320 - Political science
1
351 - Public administration
1
370 - Education
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
531 - Classical mechanics; solid mechanics
1
534 - Sound & related vibrations
1
540 - Chemistry & allied sciences
1
627 - Hydraulic engineering
1
800 - Literature & rhetoric
1