@book{97096,
	author = {Hernández Pérez, María Elena.},
	title = {Bacterias coliformes y Escherichia coli 0157 en hortalizas frescas comercializadas en el Tianguis orgánico Chapingo},
	publisher = {El autor,},
	year = {2009},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/108747.pdf}
}