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1
by Wellmer, Friedrich-Wilhelm
Published 1998
Springer Berlin Heidelberg
Subjects: “...Geology...”
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2
by Wellmer, Friedrich-Wilhelm, Dalheimer, Manfred, Wagner, Markus
Published 1989
Springer Berlin Heidelberg
Table of Contents: “... of Geological Data into Mining Data for Ore Deposits -- 7 Calculation of the Net Smelter Return (NSR) of a Mine...”