00528nam a2200157Ia 4500008004100000082001500041100002300056245004100079260003600120300001000156600001700166650006800183942000700251952009500258999001700353140224s9999    xx            000 0 und d  a621.385 M2  aJain, Gyan C., ed.  aPractical value equivalents and data  aDelhibBusiness Promotionc1977  a176p.  aC. Gyan Jain  aElectron tubes,Electric valves,Electronic circuits,Vacuum-tubes  cBK  00104070aKSDbKSDd2014-02-24l0o621.385 M2p2870r2014-02-24 00:00:00w2014-02-24yBK  c95319d95319