Regulations governing the production and sale of helium for medical, scientific, and commercial use
Publisher: U.S. Govt. print. off.
Published: 1940
Place of publication: Washington
Language: eng
Number of pages: 18
Subjects: Helium
Notes: At head of title: United States Department of the interior. Harold L. Ickes, secretary. Bureau of mines. R. R. Sayers, acting director.