@book{120758,
	author = {Gortari, Elí De.},
	title = {Logica general},
	publisher = {Editorial Grijalbo},
	year = {1972, c1965.},
	series = {Tratados y manuales Grijalbo},
	address = {México},
	edition = {22a ed.},
	note = {cover title.}
}