@book{6680,
	author = {Descartes, René, and Turró, Salvio.},
	title = {El Mundo. Tratado de la luz / },
	publisher = {Anthropos : },
	year = {1989.},
	series = {Textos y documentos ; },
	address = {Barcelona : },
	edition = {Ed. bilingue.}
}