@INBOOK {CARSKY:1998c, title = {Identification of cover crops for the semi-arid savanna zone of West Africa}, author = {Carsky, R. and Ndikawa, R. }, year = {1998}, pages = {179--187}, chapter = {9}, publisher = {International Development Research Centre (IDRC)}, address = {P O Box 8500, Ottawa, Canada K1G 3H9}, isbn = {0-88936-852-X}, note = {In: Cover crops in West Africa: contributing to sustainable agricultue}, }