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References
- ↑ "Organic Agriculture Pioneer Receives 'Genius' Award", Vegetarian Times, Oct 1988
- ↑ "Garth Youngberg's Fertile Vision; The Natural-Farming Expert Reaps a Genius' Award'", The Washington Post, Ward Sinclair, Aug 1, 1988
- ↑ Urbana-Champaign, ATLAS, LAS, University of Illinois at. "Award Recipients « Award Programs « Alumni Association « Alumni & Friends « College of LAS « Illinois". www.las.illinois.edu. Retrieved 2016-04-11.
- ↑ Policy Studies Journal: The Journal of the Policy Studies Organization. University of Illinois. 1974-01-01.
- ↑ "News and Notes", Nack Young An, The Journal of Politics, Vol. 43, No. 2 (May, 1981), pp. 632-637
- ↑ The Free Lance-Star Nov 12, 1979
- ↑ "Archived copy". Archived from the original on 2010-02-09. Retrieved 2010-04-16.CS1 maint: archived copy as title (link)
- ↑ "Alternative Agriculture News from the Wallace Institute -- August '99". www.ibiblio.org. Retrieved 2016-04-11.
- ↑ "Alternative Agriculture' Harvesting New Support", The Morning Call, October 01, 1989, PETE LEFFLER
- ↑ The grasslands of the United States: an environmental history, James Earl Sherow, ABC-CLIO, 2007, ISBN 978-1-85109-720-3
- ↑ Brewster, David E.; Rasmussen, Wayne David; Youngberg, Garth (1983-01-01). Farms in Transition: Interdisciplinary Perspective on Farm Structure. Iowa State University Press. ISBN 9780813806365.
- ↑ "Archived copy". Archived from the original on 2011-07-18. Retrieved 2010-04-16.CS1 maint: archived copy as title (link)