Conservation through engineering,
Lane, Franklin K.
Conservation through engineering, by Franklin K. Lane. - Washington, Govt. Print. Off., 1920. - iv, 35 p. 24 cm. - U.S. Geological survey. Bulletin 705 .
At head of title: Department of the interior. Extract from the Annual report of the secretary of the interior.
gs 20000061
QE75 / .B9 no. 705
Conservation through engineering, by Franklin K. Lane. - Washington, Govt. Print. Off., 1920. - iv, 35 p. 24 cm. - U.S. Geological survey. Bulletin 705 .
At head of title: Department of the interior. Extract from the Annual report of the secretary of the interior.
gs 20000061
QE75 / .B9 no. 705