Classification
302 - Social interaction
331 - Labor economics
3
658 - General management
3
330 - Economics
2
000 - Computer science, information & general works
1
006 - Special computer methods
1
300 - Social sciences
1
338 - Production
1
384 - Communications; telecommunication
1
500 - Natural sciences & mathematics
1
670 - Manufacturing
1
745 - Decorative arts
1