Huntley, L. G. Possible causes of the decline of oil wells, and suggested methods of prolonging yield - Washington : Government Printing Office, 1913 - 32 p. : ilus. - Bureau of Mines. Technical paper ; 51 . - Bureau of Mines. Technical paper ; 51 . LCCN: 17417 Subjects--Topical Terms: PetrĂ³leo.