Development of sensors and microprocessor based switching system for instrinsically safe power supply for underground use  
/ Council of Scientific & Industrial Research 
 - New Delhi:   Council of Scientific & Industrial Research,   1990 
 - 39p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>T 622.285:621.316.57  / N2