Papers presented at the 9th "Industrial Minerals" International Congress held at the Hilton International, Sydney on 25-28 March 1990 
ed. Griffiths, J.B. 
 - London  Metal Bulletin PLC  1990 
 - 243 p.  il  30 cm 
<br/><br/> Organised by Industrial Minerals Division, Metal Bulletin PLC.<br/>Cover title: 9th "Industrial Minerals" International Congress.<br/>"March 1990." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>congreso<br/>sustancia útil
<br/><br/><label>Universal Decimal Class. No.: </label>669