@book{100002,
	author = {Congreso Nacional Agronómico ( and Ayala Sánchez, C.},
	title = {Septimo congreso nacional agronómico, 27 y 28 de abril [Disco compacto]},
	publisher = {UACH. Departamento de Fitotecnia,},
	year = {2004},
	address = {Chapingo, Méx. :}
}