00250nam a2200097Ia 4500008004100000100004500041245003300086260001200119300000900131650001200140190216s9999||||xx |||||||||||||| ||und||  a"Mathachan. M, Lazarus. Vt,  Joseph. Pa" 0aPre Degree Practical Physics  bBpb Pub  a205p  aPhysics