Cadwell, J. H. (James Henry) Topics in recreational mathematics, by J. H. Cadwell. - Cambridge, Cambridge U.P., 1966. Includes bibliographies. LCCN: 67010013 //r88 Nat. Bib. No.: B67-203 Subjects--Topical Terms: Mathematical recreations. LC Class. No.: QA95 / .C28 Dewey Class. No.: 510