A standard rock suite for rapid excavation research / by Warren W. Krech, Frank A. Henderson, and Kenneth E. Hjelmstad.
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Format: | Government Document Book |
Language: | English |
Published: |
[Washington, DC] :
U.S. Dept. of the Interior, Bureau of Mines,
[1974]
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Series: | Report of investigations (United States. Bureau of Mines) ;
7865. |
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