Penguin book of the natural world / editorial consultant, Elizabeth Martin ; co-ordinating editors, Sonya Larkin, Louise Bernbaum - Harmondsworth, England : Penguin Books, 1976 - ca. 350 p. : col. ill. ; 21 cm. Includes index. ISBN: 0140037144 LCCN: 76-372381 //r863 Subjects--Topical Terms: Biology