00281nam a2200121Ia 4500008004100000082001500041100001600056245002200072260003300094300000800127942000700135999001700142190709s9999    xx            000 0 und d  a530.12 L23  aLandau, L D 0aQuantum Mechanics  aLondonbPergamon Pressc1959  a515  cBK  c37031d37031