Kumar, G. W. W. a. R. Options for developing countries in mining development. Macmillan Press.
Cita Chicago Style (17a ed.)Kumar, Grantley W. Walrond and Raj. Options for Developing Countries in Mining Development. Macmillan Press.
Cita MLA (8a ed.)Kumar, Grantley W. Walrond and Raj. Options for Developing Countries in Mining Development. Macmillan Press.
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