International trade in mica
By: by Joseph Ulmer.
Publisher: U.S. Govt. Print. Off.
Published: 1930
Place of publication: Washington
Language: eng
Number of pages: 70
Subjects: Mica.
Notes: Bibliography: p.70.
At head of title: U.S. Department of Commerce. R.P. Lamont, secretary. Bureau of Foreign and Domestic Commerce. William L. Cooper, director.