@book{218715,
	author = {Velázquez Cigarroa, Erasmo and Victorino Ramírez, Liberio},
	title = {Agroecología y educación media superior :},
	publisher = {El autor,},
	year = {2019.},
	address = {Chapingo, México :},
	url = {http://10.13.5.2/tesis/td/Velazquez_Cigarroa_Erasmo.pdf}
}