@book{90228,
	author = {Pérez Pérez, Juan Ramón.},
	title = {Colecciones ex situ de la Universidad Autónoma Chapingo en Huatusco, Ver.},
	publisher = {UACH. Centro Regional Universitario Oriente,},
	year = {2004.},
	address = {Chapingo, Méx. :}
}