00253nam a2200109Ia 4500008004100000041000800041082002400049100001400073245003900087260000900126300000800135211209s1972    xx            000 0 und d  aeng  a621.381 528 N66 TUN  aTUNER R P  aTRANSISTORS : THEORY AND PRACTICE   c1972  a160