Zenghong, Yang Orchids / Yang Zenghong ... [et al.]. - Beijing, : China Esperanto Press, c1993. - 178p. : ill. ; 28 cm. ISBN: 505200925 LCCN: Subjects--Topical Terms: OrchidsOrchid cultureOrchids LC Class. No.: SB409.O64 / .O65 1993 Dewey Class. No.: 635.93415