@book{68841,
	author = {Cedillo Martínez, Isaías.},
	title = {Algunos aspectos fisiológicos de las malezas del altiplano potosino - zacatecano},
	publisher = {El autor,},
	year = {1988},
	address = {Chapingo, Méx. :},
	note = {31-239}
}