Classification
621 - Applied physics
5
650 - Management & auxiliary services
4
300 - Social sciences
3
005 - Computer programming, programs & data
2
570 - Life sciences; biology
2
616 - Diseases
2
617 - Surgery & related medical specialties
2
001 - Knowledge
1
004 - Data processing & computer science
1
305 - Social groups
1
306 - Culture & institutions
1
332 - Financial economics
1
363 - Other social problems & services
1
512 - Algebra
1
519 - Probabilities & applied mathematics
1
530 - Physics
1
539 - Modern physics
1
547 - Organic chemistry
1
571 - Physiology & related subjects
1
592 - Invertebrates
1
624 - Civil engineering
1
658 - General management
1
691 - Building materials
1
820 - English & Old English literatures
1
910 - Geography & travel
1