Knowles, R <br/><br/>
Automatic testing  systems and applications 
Roy Knowles 
 - London  McGraw-Hill  1976 
 - ix, 246 p. : ill. ; 24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0070844615 
<br/><br/><label>LCCN: </label>75-034197 //r87 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Automatic checkout equipment