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  • Description: conservancy
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    • DuPont Magazine [April 1931]

    • Periodicals; Chemical industry; Paint industry; Plastics industry; Textile industry; Automobile industry; Rayon;
    • Table of Contents: Dynamite fear complex; Camels take out quality insurance; Quarrying vanport limestone; They can be used again and again; An educational service; Do you need a new golf bag; The middle Rio Grande conservancy project; Introducing...

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