@book{4496,
	author = {Valles Santo Tomás, Alejandro and Colciencias},
	title = {El Geómetra de la Razón: René Descartes /},
	publisher = {Colciencias, Alfaomega,},
	year = {2002.},
	address = {Bogotá :},
	note = {Edición original pangea.}
}