Classification
624 - Civil engineering
75
551 - Geology, hydrology & meteorology
54
550 - Earth sciences
29
526 - Mathematical geography
26
553 - Economic geology
14
690 - Buildings
7
333 - Economics of land & energy
4
363 - Other social problems & services
4
531 - Classical mechanics; solid mechanics
4
620 - Engineering & allied operations
4
338 - Production
3
549 - Mineralogy
3
577 - Ecology
3
628 - Sanitary & municipal engineering
3
910 - Geography & travel
3
519 - Probabilities & applied mathematics
2
539 - Modern physics
2
662 - Explosives, fuels & related products
2
670 - Manufacturing
2
691 - Building materials
2
006 - Special computer methods
1
307 - Communities
1
320 - Political science
1
536 - Heat
1
571 - Physiology & related subjects
1
615 - Pharmacology & therapeutics
1
629 - Other branches of engineering
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1
658 - General management
1
745 - Decorative arts
1