Sensors Expo Proceedings Chicago Illinois September 11-13, 1990  

 - Peterborough, Nh :   Helmers Publishing/Expocon Management Associates,   c1990 
 - vp.  : ill 
<br/><br/>Includes Bibliographical References 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Detectors Congresses
<br/><br/><label>Dewey Class. No.: </label>681.2  / SEN