00255nam a2200109Ia 4500008004100000041000800041082002000049100001200069245004700081260000900128300000800137211209s1978    xx            000 0 und d  aeng  a621.381 N75 BUB  aBUBAN S  aUNDERSTANDING ELECTRICITY AND ELECTRONICS   c1978  a466