00261nam a2200109Ia 4500008004100000041000800041082002200049100001800071245004500089260000900134300000800143211209s1979    xx            000 0 und d  aeng  a621.381 1 N79 RYD  aRYDER, JOHN D  aELECTRONIC FUNDAMENTALS AND APPLICATION   c1979  a538