00281nam a2200121Ia 4500008004100000082001000041082001000051100001500061245003200076260001100108260003100119260000900150230118s9999||||xx |||||||||||||| ||und||  a537.5  bTAY/E  ad.cbtayal 0aelectricity and electronics  abombay  bhimalaya publishing house   c1975