Ahmad, Zaki. <br/><br/>
Minerals and rocks for industry [vol-1]  / 
by Zaki Ahmad, Razi Ahmad Siddiqi. 
 - Quetta :  Geological Survey of Pakistan,  1992. 
 - xxiii,325p. :  ill. ;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial minerals--Pakistan.
<br/><br/><label>Dewey Class. No.: </label>553.05491 AHM