United States government master specification for ribbons for computing and recording machines.
Series: Circular of the Bureau of Standards -- no. 188; Federal Specifications Board specification -- no. 169
Publisher: Govt. Print. Off.
Published: 1924
Place of publication: [Washington
Language: eng
Subjects: Calculators.
Other titles: Ribbons for computing and recording machines
Notes: "Issued August 2, 1924."

At head of title: Department of Commerce. Bureau of Standards.