Classification
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381 - Commerce
3
303 - Social processes
2
305 - Social groups
2
540 - Chemistry & allied sciences
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
2
781 - General principles & musical forms
2
006 - Special computer methods
1
121 - Epistemology
1
128 - Humankind
1
150 - Psychology
1
155 - Differential & developmental psychology
1
296 - Judaism
1
306 - Culture & institutions
1
321 - Systems of governments & states
1
332 - Financial economics
1
337 - International economics
1
368 - Insurance
1
371 - Schools & their activities; special education
1
414 - Phonology & phonetics
1
519 - Probabilities & applied mathematics
1
520 - Astronomy & allied sciences
1
657 - Accounting
1
659 - Advertising & public relations
1
745 - Decorative arts
1
920 - Biography, genealogy & insignia
1