@book{10461,
	author = {Sagredo, Amarilis and Luna, Eduardo and Pontificia  Universidad Católica Madre y Maestra },
	title = {Nociones de lógica simbólica /},
	publisher = {UCMM,},
	year = {1979.},
	series = {Textos},
	address = {Santiago, República Dominicana :}
}