The coal fields of the United States
Subtitle: general introduction
By: by Marius R. Campbell.
Series: Professional paper / Dept. of the Interior, United States Geological Survey -- 100-A; Geological Survey professional paper -- 100-A.
Publisher: Govt. Print. Off.
Published: 1917
Place of publication: Washington [D.C.]
Language: eng
Number of pages: 33
Subjects: Coal -- United States.
Notes: "Published February 24, 1917."

Map in pocket.

Includes bibliographical references.