Biodiversity Heritage Library · page-16526273
Economic effects of controls on nitrogen fertilizer — Illustration, Page 5
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BHL classifies this scanned page as Illustration. Publication: Economic effects of controls on nitrogen fertilizer. Publication creators (not identified as the page's illustrator): Swanson, E. R. (Earl Raymond), 1921-; Taylor, C. R. 1946-; Van Blokland, P. J.. Contributing institutions: University Library, University of Illinois Urbana Champaign. Bibliographic metadata supplied by BHL under CC0; image rights are separate.
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1978. Economic effects of controls on nitrogen fertilizer — Illustration, Page 5. https://www.biodiversitylibrary.org/page/16526273
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