Classification
PBG - Relativity, gravitation
PKKA - Quantum field theory
3
PLA - Astrosciences - general
2
AHZ - History of science and technology
1
PAA - Physics - reference books
1
PBA - Quantum theory
1
PBB - Quantum theory - special methods
1
PCA - Thermodynamics
1
PKK - Theory of fields and particles - general
1