@book{89709,
	author = {Ramírez Alcocer, Ernesto.},
	title = {Coadyuvantes en la acción biológica de herbicidas sulfunilureas /},
	publisher = {El autor,},
	year = {2005.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/101238.pdf}
}