1. Development of visual extension material for a striga control programme in northern Ghana through action research Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Feil, Petra (author), Hummler, Klaus (author), and Kachelriess, Stefan (author) Format: Abstract Publication Date: 1997-03 Published: Ghana Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 156 Document Number: C25375 Journal Title: Journal of Agricultural Education and Extension Journal Title Details: 4(1) : 1-16 Notes: Retrieved January 28, 2007