Dummer, G. W. A. <br/><br/>
Electronic inventions 

 - Oxford  Pergamon  1977 
 - v,158p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Electronic-Inventions
<br/><br/><label>Dewey Class. No.: </label>621.381072,  / D88E