@book{74851,
	author = {García Sánchez, Ernesto.},
	title = {Resistencia de variedades de cebolla (Allium cepa L.) a Alternaria porri (Ellis) Cif. (Mancha purpura) y Thrips tabici Lind. (Trips de la cebolla), en Chapingo, México},
	publisher = {El autor,},
	year = {1997.},
	address = {Chapingo, Méx. :}
}