TY  - BOOK
ED  - Roskill Information Services Ltd.
TI  - The economics of kyanite, andalusita, sillimanite and related minerals
U1  - 338.274  21
PY  - 1983///
CY  - London
PB  - [editorial no identificada]
KW  - MINERALES NO METALICOS
N1  - Material Bibliográfico en Estantería; Introduction -- resources and production -- consumtion -- international trade -- prices. .
ER  -