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AUTHORS (1-8 共 8)
Gardner, E. D. (Eugene Delos), 1885-
1 Copper mining in North America, Gardner, E. D. (Eugene Delos), 1885- Washington, United States Government Print. Off., 1938. 1938 评级: 复本
2 Drilling and blasting in metal-mine drifts and crosscuts Gardner, E. D. (Eugene Delos), 1885- Washington : U.S. G.P.O., 1929. 1929 评级: 复本
3 Drilling and blasting in open-cut copper mines, Gardner, E. D. (Eugene Delos), 1885- Washington, U.S. Govt. Print. Off., 1927. 1927 评级: 复本
4 Gases from blasting in tunnels and metal-mine drifts Gardner, E. D. (Eugene Delos), 1885- Washington : U.S. G.P.O., 1927. 1927 评级: 复本
5 Open-cut metal mining, Gardner, E. D. (Eugene Delos), 1885- Washington, U.S. Govt. Print. Off., 1941. 1941 评级: 复本
6 Power-shovel and dragline placer mining Gardner, E. D. (Eugene Delos), 1885- Washington, DC : United States Dept. of the Interior, Bureau of Mines, 1938. 1938 评级: 复本
7 Shaft-sinking practices and costs Gardner, E. D. (Eugene Delos), 1885- Washington : U.S. G.P.O., 1932. 1932 评级: 复本
8 Stoping methods and costs, Jackson, Charles Freeman, 1886- Washington, U.S. Govt. Print. Off., 1936. 1936 评级: 复本
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