Annual report of the Petroleum and natural-gas division , fiscal year 1939
By: by R.A. Cattell and other ...
Series: Report of investigations -- 3501
Published: 1940
Place of publication: Washington, D.C.
Language: eng
Number of pages: 41
Notes: At head of title: ... United States Department of the interior. Harold L. Ickes, secretary. bureau of mines. A.C. Fieldner, acting director.

Manifold copy.

Bibliographical footnotes.