00290nam a2200121Ia 4500008004100000100001400041245003800055260003000093300000900123650001200132942000700144999001700151190216s9999||||xx |||||||||||||| ||und||  aAbraham.S 0aFundamentals Of Dio Communication  bD -van Nostrand Co.c1963  a442p  aPhysics  cBK  c32700d32700