Notholt , Arthur J.G <br/><br/>
Phosphate rock :  a  bibliography of world resources / 
by Arthur J.G.Notholt and Kenneth Hartley 
 - London :  Mining  Journal Books,  c1983 
 - xxxv , 147 p . :  21cm . 
<br/><br/><label>ISBN: </label>0900117362 
<br/><br/><label>LCCN: </label>86-059980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Phosphate rock--Bibliography