Classification
530 - Physics
18
539 - Modern physics
18
620 - Engineering & allied operations
12
621 - Applied physics
10
520 - Astronomy & allied sciences
6
543 - Analytical chemistry
6
571 - Physiology & related subjects
4
526 - Mathematical geography
3
549 - Mineralogy
3
550 - Earth sciences
3
616 - Diseases
3
535 - Light & infrared & ultraviolet phenomena
2
537 - Electricity & electronics
2
610 - Medicine & health
2
500 - Natural sciences & mathematics
1
510 - Mathematics
1
512 - Algebra
1
538 - Magnetism
1
546 - Inorganic chemistry
1
611 - Human anatomy, cytology & histology
1
693 - Specific materials & purposes
1