Posamentier, Alfred S. [Pi] A biography of the world's most mysterious number / Alfred S. Posamentier and Ingmar Lehmann - Amherst, N.Y. : Prometheus Books, c2004. - 324 p. : ill. ; 24 cm. Includes bibliographical references (p. 309-311) and index. ISBN: 9781591022008 Subjects--Topical Terms: Pi. LC Class. No.: QA484 / .P67 2004