LEADER 00938nam a2200277 i 4500
001 991001321239707536
005 20020507114419.0
008 960521s1948    us            ||| | eng  
035   $ab10204349-39ule_inst
035   $aLE00645821$9ExL
040   $aDip.to Fisica$bita
084   $a621.3.2
084   $a621.384132
084   $aTK7872.V3
100 1 $aSpangenberg, Karl R.$02699
245 10$aVacuum tubes /$cKarl R. Spangenberg
260   $aNew York :$bMcGraw-Hill Book Co. ; Tokyo : Kogakusha Company,$c1948
300   $axvii, 860 p. :$bill. ;$c24 cm.
500   $aIncludes bibliographies.
650  4$aVacuum-tubes
907   $a.b10204349$b21-09-06$c27-06-02
912   $a991001321239707536
945   $aLE006 621.3.2 SPA$g1$i2006000055307$lle006$o-$pE0.00$q-$rl$s-  $t0$u0$v0$w0$x0$y.i10252411$z27-06-02
996   $aVacuum tubes$9192225
997   $aUNISALENTO
998   $ale006$b01-01-96$cm$da  $e-$feng$gus $h0$i1