Feller, William, 1906-1970. An introduction to probability theory and its applications / W. F eller. - 3rd ed. - New York : Wiley 1957, c1968. - xviii,509 p. : ill. ; 24 cm. - Wiley series in probability and mathematical statistics . Includes bibliographical references. ISBN: 9780471257080 Subjects--Topical Terms: Probabilities. Dewey Class. No.: 519.1