Gas mask for protection in air against all gases, vapors, and smokes
By: by A. C. Fieldner ... [et al.].
Publisher: Dept. of Commerce, Bureau of Mines : [for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1925
Place of publication: Washington
Language: eng
Number of pages: 11
Subjects: Gas masks; Mine safety; Equipment and supplies
Notes: Caption title.

"Serial 2719."

Mimeographed text.

Includes bibliographical footnotes.