Section 19 The current density
Section 29 Matrix elements of vectors
Section 30 Parity of a state
Section 31 Addition of angular momenta
Section 34 Resolution of a plane wave
Section 42 Transitions under action of periodic perturbation
Section 43 Transitions in the continuous spectrum
Section 74 X-ray terms
Section 75 Multipole moments
Section 116 Isotopic invariance
Section 117 Nuclear Forces
Section 123 The general theory of scattering