@book{10492,
	author = {Sagredo, Amarilis and Pontificia  Universidad Católica Madre y Maestra },
	title = {Nociones de lógica simbólica /},
	publisher = {UCMM,},
	year = {1988.},
	series = {Textos},
	address = {Santo Domingo :},
	edition = {6a ed.}
}