Jaques, H. E. Plant families : how to know them ; pictured-keys for determining the families of nearly all of the members of the entire plant kingdom / H.E. Jaques. - New Delhi, India : Agro Botanical Publishers, c1999. - 174 p. : ill. ; 24 cm. Includes bibliographical references and index. Subjects--Topical Terms: Botany--Classification. LC Class. No.: QK94 / J37 1999