Proceedings 1962 . 

 - Lahore :  WPEC ,  1962 
 - 147 p. :  ill. ;  35 cm.  
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural resources<br/>Water
<br/><br/><label>Dewey Class. No.: </label>333.91  / PAK-6