Typewriter ribbons and carbon paper
By: by C.E. Waters.
Series: Circular of the National Bureau of Standards ;; C431
Publisher: U.S. G.P.O.
Published: 1941
Place of publication: Washington
Language: eng
Number of pages: 34
Subjects: Typewriters ribbons -- Standards; Carbon paper -- Standards
Notes: At head of title: U.S. Dept. of Commerce, Jesse H. Jones, Secretary.  National Bureau of Standards, Lyman J. Briggs, Director ...
"Issued June 14, 1941."