@book{278496,
	author = {Lecona Urrutia, Adrián Augusto},
	title = {Ecología y media ambiente / },
	publisher = {Mc Graw-Hill Education, },
	year = {2014.},
	address = {Mexico :},
	url = {https://elibro.net/es/lc/pucpr/titulos/37537}
}