Johnson, Thys B.
Improving returns from mine products through use of operations research techniques Johnson, Thys B. - Washington Bureau of Mines 1969 - ii, 78 p. il 26 cm 1 map - RI 7230 .
operations research
Mineral industries Production standards
66
Improving returns from mine products through use of operations research techniques Johnson, Thys B. - Washington Bureau of Mines 1969 - ii, 78 p. il 26 cm 1 map - RI 7230 .
operations research
Mineral industries Production standards
66