@book{3122,
	author = {Calixto, Raúl.},
	title = {Ecología y Medio Ambiente /},
	publisher = {Cengage Learning Editores S.A. de C.V.,},
	year = {2012.},
	address = {Mexico :},
	url = {https://isae.metabiblioteca.org/cgi-bin/koha/opac-retrieve-file.pl?id=6c04db3d70c45859aa68ffadab48ef59}
}