@book{93519,
	author = {Pineda Francisco, Luis Angel},
	title = {Estimación del nivel de tolerancia del frijol ayocote (Phaseolus coccineus L.) al herbicida glifosato en Chapingo, México},
	publisher = {El autor,},
	year = {2007.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/105082.pdf}
}