000 00254nam a2200109Ia 4500
008 160710s1948 xx 000 0 und d
100 _aMORTAN,L.
245 _aADVANCES IN ELECTRONICS
260 _bACADEMIC PRESS
_c1948
300 _a475
942 _2ddc
_cB
999 _c21556
_d21556