Trewman, H. F.  1891-1981, <br/><br/>
Electronics in the factory;  electronic devices for timing, counting, measurement, process control, inspection, etc., with a survey of medical and surgical aids. 

 - London,  I. Pitman,  1949. 
 - 188 p.  illus.  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ELECTRONICA
<br/><br/><label>Universal Decimal Class. No.: </label>621.38