Classification
330 - Economics
47
331 - Labor economics
6
668 - Technology of other organic products
5
610 - Medicine & health
4
340 - Law
3
530 - Physics
3
541 - Physical chemistry
3
612 - Human physiology
3
616 - Diseases
3
660 - Chemical engineering
3
664 - Food technology
3
004 - Data processing & computer science
2
300 - Social sciences
2
301 - Sociology & anthropology
2
332 - Financial economics
2
338 - Production
2
380 - Commerce, communications & transportation
2
520 - Astronomy & allied sciences
2
531 - Classical mechanics; solid mechanics
2
537 - Electricity & electronics
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
050 - General serial publications
1
150 - Psychology
1
170 - Ethics
1
304 - Factors affecting social behavior
1
305 - Social groups
1
306 - Culture & institutions
1
320 - Political science
1
339 - Macroeconomics & related topics
1
370 - Education
1
382 - International commerce
1
391 - Costume & personal appearance
1
500 - Natural sciences & mathematics
1
511 - General principles of mathematics
1
519 - Probabilities & applied mathematics
1
543 - Analytical chemistry
1
547 - Organic chemistry
1
549 - Mineralogy
1
551 - Geology, hydrology & meteorology
1
553 - Economic geology
1
617 - Surgery & related medical specialties
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
661 - Industrial chemicals
1
665 - Industrial oils, fats, waxes & gases
1
780 - Music
1
900 - History & geography
1