History of organic farming (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "History of organic farming" in English language version.

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academia.edu

archive.org

  • Holger Kirchmann; Gudni Thorvaldsson; Lars Bergström; Martin Gerzabek; Olof Andrén; Lars-Olov Eriksson; Mikael Winninge (2008). Holger Kirchmann and Lars Bergström (ed.). Organic Crop Production – Ambitions and Limitations. Berlin: Springer. pp. 13–37. Organic agriculture can be traced back to the early 20th century, initiated by the Austrian spiritual philosopher Rudolf Steiner.

books.google.com

donlotter.net

federalregister.gov

mofga.org

  • Association, Maine Organic Farmers and Gardeners. "Abridged History". www.mofga.org. Retrieved 2016-12-15.

orgprints.org

sciencesocieties.org

portal.sciencesocieties.org

washingtontilth.org

web.archive.org