@book{91161,
	author = {Yescas Contreras, Gaudencio.},
	title = {Cultivo de berro (Nasturtium officinale R. Br) en la comunidad de la Nevería, Lachatao, Ixtlán, Oaxaca :},
	publisher = {El autor,},
	year = {2005.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/102696.pdf}
}