Courant, Richard, What is mathematics? : an elementary approach to ideas and methods by Richard Courant and Herbert Robbins - - New York Oxford University Press 1996 - 566 p. : ill; 23 cm. - - . Includes bibliographical references and index ISBN: 9780195105193 = Nat. Bib. No.: Nat. Bib. Agency Control No.: Subjects--Meeting Names: Subjects--Index Terms: Mathematics LC Class. No.: / Dewey Class. No.: 510 COU