Lofty, G. J.[et al] <br/><br/>
World mineral statistics 1976-80  Production ,exports,imports 
by G. J. Lofty,[et al] 
 - London  Her Majesty's Stationery Office  1982 
 - iv, 267p. 
 - Institute of geological sciences .
<br/><br/><label>ISBN: </label>0118843400 
<br/><br/><label>Dewey Class. No.: </label>549.0212  / N82 "R"