Beck, A. H. W.  1916- <br/><br/>
Thermionic valves :  their theory and design / 
A. H. W. Beck 
 - Cambridge Eng. :  University Press,  1953 
 - xvi, 570 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label> Rs. 60.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vacuum-tubes
<br/><br/><label>Dewey Class. No.: </label>621.34