1. Agricultural production potentials part II: development support policies and strategies -- from yield gaps to opportunity gaps Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Haverkort, Bertus (author) and ETC Foundation Format: Journal article Publication Date: 1988 Published: Netherlands: Elsevier Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 160 Document Number: D07773 Journal Title: Agricultural Administration and Extension Journal Title Details: 30 (3): 187-201