1. Diffusion of strip cropping and southwestern Wisconsin Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Johansen, Harley E. (author) Format: Journal article Publication Date: 1971-12 Published: USA Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C26590 Journal Title: Annals of the Association of American Geographers Journal Title Details: 61(4): 671-683
