@book{93603,
	author = {Ortega Peña, José Ricardo.},
	title = {Inventario de recursos naturales con enfoque participativo de la comunidad de San Pablo Ixayoc, Texcoco, Méx.},
	publisher = {El autor,},
	year = {2007.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/105170.pdf}
}