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Mechanical safeguards in rotary drilling /
by H.C. Miller.

APA Citation

Miller, H. Carl. (1925). Mechanical safeguards in rotary drilling. Washington, D.C.: U.S. Dept. of Commerce, Bureau of Mines .

MLA Citation

Miller, Harold Carl, 1889-. Mechanical Safeguards In Rotary Drilling. Washington, D.C.: U.S. Dept. of Commerce, Bureau of Mines , 1925.

Warning: These citations may not always be complete (especially for serials).