Developments in coal research and technology in 1937 and 1938
By: by Arno C. Fieldner.
Series: U.S. Bureau of Mines.  Technical paper 613
Publisher: U.S. Gov't Print. Off.
Published: 1940
Place of publication: Washington
Language: eng
Number of pages: 95
Subjects: Coal; Research, Industrial
Notes: Bibliographical foot-notes.
At head of title:  United States Department of the Interior.  Harold L. Ickes, Secretary.  Bureau of Mines.  John W. Finch, Director ...
A continuation of material previously published in the Minerals yearbook.  cf. Introd.