Groot, J. J. de,  1947- <br/><br/>
The High-pressure sodium lamp / 
J. J. de Groot and J. A. J. M. van Vliet 
 - Houndmills :  Macmillan Education,  1986 
 - 328 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references (p. 305-323) and index 
<br/><br/><label>ISBN: </label>0333432452 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric lighting, Sodium discharge