@INBOOK {POKU:1991,
title = {Maize response to fertilizer in the Center Province, Cameroon: a methodological case study},
author = {Poku, J. and Baker, D. },
year = {1991},
type = {On-farm research in theory and practice, edited by H.J.W. Mutsaers and P. Walker},
pages = {128--138},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
}