@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.},
}