@BOOK {UGWU:1992, title = {Seasonality of cassava processing in Africa and tests of hypotheses: COSCA working paper, No. 6}, author = {Ugwu, B. and Ay, P. }, series = {COSCA working paper}, year = {1992}, number = {6}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {RTB; Root and Tuber; Cassava.; 23p.}, }