@BOOK {AKEM:1992e, title = {Maladies du soja: biologie, identification et lutte: Guide de recherche de l'Iita, No. 40}, author = {Akem, C. }, series = {Guide de recherche de l'Iita, No. 40}, year = {1992}, month = {November}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {37p.}, }