Bram, Leon L., Funk and wagnalls new encyclopedia/ Leom L. Bram. - United States of America: Funk and Wagnalls Corporation., 1993. - 448 pages: Color illustrations, tables. 25 cm. - 12 . Includes bibliographical references and index. English ISBN: 083430094x Subjects--Topical Terms: Heartsease. Dewey Class. No.: 030 / B72