1. Excessive needs as cause of unsustainable stock production under extensive range conditions Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Duvel, G.H. (author) and Lategan, F.S. (author) Format: Abstract Publication Date: 1997-03 Published: Namibia Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 156 Document Number: C25376 Journal Title: Journal of Agricultural Education and Extension Journal Title Details: 4(1) : 17-28 Notes: Retrieved January 28, 2007