Classification
621 - Applied physics
620 - Engineering & allied operations
51
384 - Communications; telecommunication
30
500 - Natural sciences & mathematics
19
745 - Decorative arts
18
331 - Labor economics
7
535 - Light & infrared & ultraviolet phenomena
7
004 - Data processing & computer science
5
510 - Mathematics
4
333 - Economics of land & energy
3
781 - General principles & musical forms
3
006 - Special computer methods
2
338 - Production
2
658 - General management
2
330 - Economics
1
380 - Commerce, communications & transportation
1
381 - Commerce
1
686 - Printing & related activities
1