National Institute of Science Communication CSIR <br/><br/>
The Wealth of India (vol.-VIII : Ph-Re) 
/ by National Institute of Science Communication CSIR 
 - New Delhi:  National Institute of Science Communication CSIR,  1969. 
 - 394p. 
<br/><br/><label>ISBN: </label>818503818X 
<br/><br/><label>Dewey Class. No.: </label>338.2  / PUB/T