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		Profiles in the history of the U.S. Soil Survey / edited by Douglas Helms, Anne B.W. Effland, Patricia J. Durana. by Helms, Douglas, 1945- Effland, Anne B. W Durana, Patricia J Series: Wallace series ; 1 Edition: 1st ed. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Ames, Iowa : Iowa State University Press, 2002 Online resources: Table of contents Availability: Items available for loan: Nash Library (1)Call number: S599.A1P76 2002.
		No cover image available Interviews with chiefs of the Soil Conservation Service : Williams, Grant, Davis, and Berg / edited by Steven E. Phillips and Douglas Helms. by Phillips, Steven E Helms, Douglas, 1945- United States. Soil Conservation Service. Economics and Social Sciences Division Series: Historical notes ; no. 3 Material type: Text; Format: print ; Nature of contents: ; Literary form: Not fiction Publication details: Washington, D.C. : U.S. Dept. of Agriculture, Soil Conservation Service, Economics and Social Sciences Division, NHQ, [1994] Availability: Items available for loan: Nash Library (1)Call number: S624.A1I58 1994.
		No cover image available Readings in the history of the Soil Conservation Service. by Helms, Douglas, 1945- United States. Soil Conservation Service. Economics and Social Sciences Division Series: Historical notes ; no. 1 Material type: Text; Format: print ; Literary form: Not fiction Publication details: [Washington, D.C.?] : U.S. Dept. of Agriculture, Soil Conservation Service, Economics and Social Sciences Division, NHQ, [1992] Availability: Items available for loan: Nash Library (1)Call number: S624.A1H45 1992.