Mineral economics
SINHA, R. K
Mineral economics - 2nd rev ed - New Delhi 1976 - 368p
MINERALOGY - ECONOMIC ASPECTS
MINERAL INUSTRIES ECONOMICS ASPECTS MINERALOGY - ECONOMIC ASPECTS MINES AND MINERAL RESOURCES -- ECONOMIC AS
338.2 S48M
Mineral economics - 2nd rev ed - New Delhi 1976 - 368p
MINERALOGY - ECONOMIC ASPECTS
MINERAL INUSTRIES ECONOMICS ASPECTS MINERALOGY - ECONOMIC ASPECTS MINES AND MINERAL RESOURCES -- ECONOMIC AS
338.2 S48M