Classification
530 - Physics
7
539 - Modern physics
6
338 - Production
2
509 - Historical, geographic & persons treatment
2
510 - Mathematics
2
621 - Applied physics
2
623 - Military & nautical engineering
2
500 - Natural sciences & mathematics
1
501 - Philosophy & theory
1
519 - Probabilities & applied mathematics
1
540 - Chemistry & allied sciences
1
601 - Philosophy & theory
1
610 - Medicine & health
1
660 - Chemical engineering
1
900 - History & geography
1
930 - History of ancient world to ca. 499
1