Churn-drill performance /

Publication date

January 1947

Publisher

[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines,

Abstract

"January 1947."Cover title.Includes bibliographical references.Mode of access: Internet

We use cookies to provide a better user experience.

Publication date

January 1947

Publisher

[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines,

"January 1947."Cover title.Includes bibliographical references.Mode of access: Internet