Benham, W. E. The ultra high frequency performance of receiving tubes [by] W.E. Benham & I.A. Harris. - New York, McGraw-Hill, 1957. - 173 p. illus. 23 cm. LCCN: 58000856 Subjects--Topical Terms: TUBOS AL VACÍOCIRUITOS DE TUBOS AL VACÍORADIO DE ONDA CORTA