@UNPUBLISHED {KNIPSCHEER:1979d,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.},
}