Classification
003 - Systems
620 - Engineering & allied operations
34
500 - Natural sciences & mathematics
31
384 - Communications; telecommunication
6
745 - Decorative arts
6
153 - Mental processes & intelligence
4
331 - Labor economics
4
510 - Mathematics
4
658 - General management
4
330 - Economics
2
621 - Applied physics
2
005 - Computer programming, programs & data
1
011 - Bibliographies
1
519 - Probabilities & applied mathematics
1
600 - Technology
1
670 - Manufacturing
1
800 - Literature & rhetoric
1