@BOOK {SMITH:1992,
title = {Socioeconomic characterization of environments and technologies in humid and sub-humid regions of West and Central Africa: RCMP Research monograph, No. 10},
author = {Smith, J. },
series = {RCMP Research monograph, No. 10},
year = {1992},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
note = {15p.},
}