Classification
686 - Printing & related activities
745 - Decorative arts
108
740 - Drawing & decorative arts
43
620 - Engineering & allied operations
23
500 - Natural sciences & mathematics
13
302 - Social interaction
8
384 - Communications; telecommunication
7
381 - Commerce
5
510 - Mathematics
3
001 - Knowledge
2
331 - Labor economics
2
374 - Adult education
2
621 - Applied physics
2
005 - Computer programming, programs & data
1
153 - Mental processes & intelligence
1
770 - Photography, photographs & computer art
1