Adamson, Joy. Living free : the story of Elsa and her cubs / Introd. by Julian Huxley. - New York : Harcourt, 1961. - 161 p. : ill. - A Helen and Kurt Wolff book . LCCN: 61015810 Subjects--Topical Terms: Lions.Animals--Habits and behavior.Animal intelligence. Dewey Class. No.: 599.74