Radio valve data:  characteristics of 7,000 valves, transistors, semiconductor diodes and rectifiers, and cathode-ray tubes. 

 - Bombay  Allied  1970 
 - 223p.  illus.  28 cm. 
 - A "Wireless world" book .
<br/><br/><label>Dewey Class. No.: </label>621.384132  / RAD