@book{199984,
	author = {Congreso nacional agronómico (4:Chapingo, Méx.:2001) and Pérez Nieto, Joel and UACh. Departamento de Fitotecnia},
	title = {Resúmenes  /},
	publisher = { UACh. Departamento de Fitotecnia},
	address = {Chapingo, Méx. :}
}