API specification for oil well pumps.
Publisher: American petroleum institute, Division of production
Published: 1944
Place of publication: Dallas, Tex
Language: eng
Number of pages: 71
Subjects: Oil well pumps.
Other titles: Oil well pumps.
Notes: At head of title: API std. no. 11-A. 7th ed., October, 1944. Supersedes 6th ed. dated October, 1941.
"Prepared by the API Committee on the standardization of pumping equipment and engines."--p. 3.