@book{38019,
	author = {Risen, William M. and Flynn, George P.,},
	title = {Problemas de química general y ambiental /},
	publisher = {El Manual Moderno ;},
	year = {1979},
	address = {México , D.F. :},
	note = {Traducción de: Problems for general and environmental chemistry.},
	url = { https://www.cicy.mx/sitios/sib/doctoelectronico/K62403.pdf}
}