The sampling of coal in the mine
By: by Joseph A. Holmes.
Series: United States. Bureau of mines. Technical paper,; 1
Publisher: Govt. Print. Off.
Published: 1911
Place of publication: Washington
Language: eng
Number of pages: 18
Subjects: Coal -- Testing.
Notes: "Publications on fuel testing": p. 16-18
At head of title: . . . Department of the interior. Bureau of mines. Joseph A. Holmes, director.