Helfritz, Hans, 1902 The Yemen : a secret journey / tranlated by M. Heron - London : Allen & Unwin, 1958. - 180 p. : ill. map on lining papers. Translatonof Gluckliches Arabien. Includes bibliographical references and index. Subjects--Topical Terms: Yemen. Dewey Class. No.: 915.33 HEL