Classification
620 - Engineering & allied operations
777 - [Unassigned]
302 - Social interaction
2
330 - Economics
2
384 - Communications; telecommunication
2
770 - Photography, photographs & computer art
2
006 - Special computer methods
1
381 - Commerce
1
500 - Natural sciences & mathematics
1
658 - General management
1
771 - Techniques, equipment & materials
1
778 - Fields & kinds of photography
1
791 - Public performances
1