@INBOOK {TSHIUNZA:2001a, title = {Place du manioc dans les systemes de production des zones semi-arid de l'Afrique centrale et occidentale}, author = {Tshiunza, M. and Dixon, A. }, year = {2001}, type = {Root crops in the 21st century: proceedings of the 7th Triennial Symposium of the International Society for Tropical Root Crops (ISTRC) - Africa Branch, Oct 1998.}, pages = {249--255}, publisher = {Government of Benin}, }