@book{4697,
	author = {Łukasiewicz, Jan.},
	title = {Elements of mathematical logic.},
	publisher = {Macmillan},
	year = {1963.},
	series = {International series of monographs on pure and applied mathematics,},
	address = {New York,},
	edition = {2nd ed.},
	note = {"A Pergamon Press book."}
}