United States government master specification for rubber dam.
Series: Circular of the Bureau of Standards -- no. 218; Federal Specifications Board specification -- no. 228
Publisher: Govt. Print. Off.
Published: 1925
Place of publication: [Washington
Language: eng
Subjects: Rubber.; Dental instruments and apparatus.
Notes: "Issued May 22, 1925."

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