33 resultados para Reject of emerald mining. Environment. Sustainability. Isolating transformed refractory materials

em University of Michigan


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Project Sedan.

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ARS paper no. 2140-61: "Space flight report to the nation."

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Based on the 1947 Directory of Industrial Eestablishments prepared by the Virginia State Chamber of Commerce, and intended as an aid in the use of the annual directory. Transparent overlay map, in pocket.

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"February 1985."

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Short bibliography at end of each chapter.