Technology in Indian high pressure sodium vapour lamp industry:   A status report prepared under the national register of foreign collaborations 

 - New Delhi:   Department of Scientific & Industrial Research,   1992 
 - x, 153p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Report
<br/><br/><label>Universal Decimal Class. No.: </label>621.327.53(047)  / N2