TY  - SER
ED  - Commonwealth Economic Committee.
TI  - 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 / 
PY  - 1964///-
CY  - London : 
PB  - H. M. Stationery Off. , 
KW  - Nonmetallic minerals
KW  - Mineral industries
ER  -