00326nam a2200145Ia 4500008004000000041000800040082001200048100001900060245001900079260003500098300000800133650001200141650001100153700001600164210210b1930   xxu||||| |||| 00| 0 eng d  aeng  a536/139  aWULF (Theodor)  aModern physics  aLondonbMethuen & co ltdc1930  a469  aphysics  aModern  aSMITH (C J)