Heyboer, J. P. <br/><br/>
Transmitting valves :   the use of pentodes, tetrodes and triodes in transmitter circuits /  
by J.P. Heyboer and  rev. by P. Zijlstra, with a foreword by H. A. Thomas ; [English translation  by G. Duclox-Sutton (England)]. 
 - 1st. eng. ed. 
 - Eindhoven, Holland :  Philips' Technical Library,   1951. 
 - xii, 284 p. :   ill. ;   24 cm. 
 - Series of books on electronic valves  ;   bk. 7 .
<br/><br/> Spine title: Electronic valves. 
<br/><br/><label>LCCN: </label>93179040  
<br/><br/><label>Subjects--Corporate Names: </label><br/>Philips' Gloeilampenfabrieken.
<br/><br/><label>Subjects--Topical Terms: </label><br/>VÁLVULAS DE TRANSMISIÓN