@BOOK {HAHN:1993, title = {Lutte contre les maladies de l'igname: Guide de recherche de l'Iita, No. 39}, author = {Hahn, S. K. }, series = {Guide de recherche de l'Iita, No. 39}, year = {1993}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {17p.}, }