@book{33911,
	author = {Mena Covarrubias, Jaime.},
	title = {Control química del pulgón lanígero del manzano Eriosoma lanigerum Hausmann (Homoptera: Eriosamatidae) en Zacatecas},
	publisher = {El autor,},
	year = {1982},
	address = {Chapingo, Méx. :}
}