Sen, Ajoy Kumar . <br/><br/>
A Handbook of Economic Geology /  Textual Documents 
Ajoy Kumar Sen, P.K. Guha. 
 - 3rd ed. / 
 - Calcutta :  Modern Book Agency ,  1993. 
 - vii, 332p. :  ill. ;  22cm . 
<br/><br/>Index 
<br/><br/><label>ISBN: </label> HB 
<br/><br/><label>Subjects--Index Terms: </label>Geology-Economic geology Economic geology PG-Geology G-Geology T/G-Geology 
<br/><br/><label>Dewey Class. No.: </label>553  / Se 55 Ha