khanna, K.K. <br/><br/>
economic & commercial geography  

 - 16 
 - new delhi   sultan chand & sons  1999 
 - unlimited; 20cmsp 
<br/><br/><label>ISBN: </label>81-7014-250-4 
<br/><br/><label>Dewey Class. No.: </label>910.138  / kha/gup