Non-metallic minerals :    a review of resources, production, trade, consumption and prices relating to sulphur, gypsum and anhydrite, asbe stos, asphalt and bitumen, magnesite, graphite, mica and diamonds /  
compiled in the Commodities Division of the Commonwealth Secretariat. 
 - London :    H. M. Stationery Off. ,    1964- 
 - no. ; 25    cm. 
 - Triennal 
 - no. 1 (1964)-no.2 (1967) 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Nonmetallic minerals.<br/> Mineral industries.