War work of the Bureau of standards.
Subtitle: April 1, 1921
Publisher: Govt. print. off.
Published: 1921
Place of publication: Washington
Language: eng
Number of pages: 299
Subjects: United States. -- National Bureau of Standards; World War, 1914-1918 -- United States
Notes: At head of title: Department of commerce. Bureau of standards. S.W. Stratton, director

Plates printed on both sides