Weights of various coals
By: by S.B. Flagg.
Edition: 1st ed.
Series: Technical paper - United States. Bureau of Mines ;; 184; Technical paper (United States. Bureau of Mines) ;; 184.
Publisher: Govt. Print. Off.
Published: 1918
Place of publication: Washington
Language: eng
Number of pages: 14
Subjects: Coal -- Testing.
Notes: "Publications on the utilization of coal and lignite": p 12-14.
Cover title.
At head of title: Department of the Interior. Bureau of Mines, Joseph A. Holmes, director.