00696cam a22002171i 4500 gs 20000061 DLC 20260227111324.0 800221s1920 dcu f000 0 eng gs 20000061 (OCoLC)6006359 DLC ICharE DLC QE75 .B9 no. 705 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. 25987 25987