@INBOOK {EZUMAH:1988,
title = {Linking similar crop enviroments: relevant agronomic data},
author = {Ezumah, H. C. and Gichuru, M. },
year = {1988},
type = {Cassava-based cropping systems research 1},
pages = {31--36},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
}