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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Spelling suggestions: "subject:"limestone. 7oring."" "subject:"limestone. accoring.""

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Relationship of thrust, torque, and rate of penetration in rotary drilling of brittle materials /

Ryland, Robert Reginald. January 1954 (has links)
Thesis (M.S.)--Ohio State University, 1954. / Available online via OhioLINK's ETD Center
Limestone. Boring.

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