Hartley, C. W. S. .1911. The oil palm (Elaeis guineensis Jacq.) / C.W.S.Hartley. - 2nd ed. - London : Longman, 1977. - xviii, 806 p. : ill. ; 22 cm. - Tropical agriculture series . Includes bibliographical references and index. ISBN: 0582468094 Subjects--Topical Terms: Oil palm.