World Mining Congress <br/><br/>
Optimal Exploitation of Solid Mineral Resources 
Challenges and Constraints Volume IV 
 - New Delhi  World Mining Congress  1984 
 - 909 
<br/><br/><label>Publisher. No.: </label> Prakasha Sahitya 
<br/><br/><label>Subjects--Personal Names: </label> Environmental Science 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science