00319nam a2200133Ia 4500008004100000020001600041082001100057082001000068100001700078245004000095260001300135260002800148260000900176230118s9999||||xx |||||||||||||| ||und||  a019567107-4  a530.12  bDIR/T  ap.a.mbdirac 4athe principles of quantum mechanics  anew york  boxford university press  c1958