Technology in Indian High pressure sodium vapour lamp industry :  a status report prepared under the national register of foreign Collaborations  / 
published by Ministry of Science and Technology, Govt. of India 
 - New Delhi :  Ministry of Science and Technology,India,  1992 
 - x, 153 p. :  ill. ;  24 cm. 
<br/><br/><label>Dewey Class. No.: </label>621.3276