01052nam a22002531a 4500 66868 BD-RjUL 20211209081603.0 170321s1949 xx b 001 0 eng (BD-RjUL)66999 (OCoLC)1117192 DLC NhD DLC BD-RjUL eng eng 621.384132 23 DEF 1949 Deketh, Jan. 198506 Fundamentals of radio-valve technique : an introduction to the physical fundamentals, properties, designs and applications of radio-receiver and power-amplifier valves covering the technical development reached up to December, 1947 / Translated by F.G. Garratt Eindhoven, N.V. Philips' Gloeilampenfabrieken, Technical and Scientific Literature Dept., 1949. 022, 535 p. : illus. ; 24 cm. Philips' technical library. Series of books on electronic valves, book 1 Bibliography: p. 513-521. Vacuum-tubes. 198507 Garratt, F.G. 198508 ddc BK 66868 66868 0 0 ddc 0 1 NFIC RUCL RUCL Reading 2021-12-09 Feroz Sons 21.14 0 621.384132 DEF 1949 2017-03-22 00:00:00 C-1 2017-03-22 BK