@UNPUBLISHED {KNIPSCHEER:1979d, title = {Prices (1972-1979) of fertilizers in Nigeria and other African Countries: Agricultural Economics Information Bulletin No. 5}, author = {Knipscheer, H. C. }, year = {1979}, month = {September}, note = {Agricultural Economics Information Bulletin No. 5, IITA, September 1979. 14p.}, }