@BOOK {MANYONG:1996b,
title = {Macrocharacterization of agricultural systems in Central Africa; an overview: RCMP Research monograph, No. 22},
author = {Manyong, V. and Smith, J. and Weber, S. S. and Jagtap, S. and Oyewole, B. },
series = {RCMP Research monograph, No. 22},
year = {1996},
publisher = {International Institute of Tropical Agriculture (IITA)},
address = {Ibadan, Nigeria},
note = {56p.},
}