@book{93383,
	author = {Alvarez González, Elizabeth.},
	title = {Las variables macroeconómicas y su impacto en el sector agrícola de México},
	publisher = {El autor,},
	year = {2006.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/104943.pdf}
}