Smith, Donald A. <br/><br/>
abc's vaccum tubes/ 
Donald A. Smith 
 - Bombay:  D.B. Taraporevala,  1967 
 - 128 p.;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> Rs. 8.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vaccum-tubes<br/>Diodes<br/>Triodes<br/>Gas tubes
<br/><br/><label>Dewey Class. No.: </label>621.38151