The ultra high frequency performance of receiving valves / [by] W.E. Benham & I.A. Harris Foreword by Harold Everard M. Barlow. Benham, Wilfrid Earnshaw. [from old catalog] Harris, Ian Arthur, [from old catalog] joint author. Vacuum-tubes. Vacuum-tube circuits. [from old catalog] Shortwave radio. QC544.V3 B4 1957a BD-DhUL BEU includes index. London : Macdonald, 1957. 1957. 1957 Text 173 p. : eng