Conservation through engineering, by Franklin K. Lane.

By: Material type: TextTextSeries: U.S. Geological survey. Bulletin 705Publication details: Washington, Govt. Print. Off., 1920.Description: iv, 35 p. 24 cmLOC classification:
  • QE75 .B9 no. 705
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At head of title: Department of the interior.

Extract from the Annual report of the secretary of the interior.

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