Classification
302 - Social interaction
658 - General management
51
330 - Economics
45
300 - Social sciences
41
500 - Natural sciences & mathematics
27
670 - Manufacturing
23
331 - Labor economics
15
338 - Production
12
303 - Social processes
9
006 - Special computer methods
8
384 - Communications; telecommunication
8
381 - Commerce
7
158 - Applied psychology
3
380 - Commerce, communications & transportation
3
650 - Management & auxiliary services
3
770 - Photography, photographs & computer art
3
153 - Mental processes & intelligence
2
620 - Engineering & allied operations
2
745 - Decorative arts
2
000 - Computer science, information & general works
1
001 - Knowledge
1
170 - Ethics
1
305 - Social groups
1
306 - Culture & institutions
1
332 - Financial economics
1
362 - Social welfare problems & services
1
659 - Advertising & public relations
1
775 - Digital photography
1