Adamson, Joy Pippa's challenge / Joy Adamson. - 1st American ed. - New York : Harcourt Brace Jovanovich, 1972. - xiv, 177 pages : ill. ; 25 cm. - 599.742.7 (NLA) . "A Helen and Kurt Wolff book." ISBN: 0151719802 Subjects--Topical Terms: Cheetah--Biography Universal Decimal Class. No.: 599.742.7 (NLA)