Mohamed, Haji. A taxonomic revision of the moss families Hookeriaceae and Hypapterygiaceae in Malaya - Washington, D. C. : Smithsonian Institution, 1991 - 44 p. : ilus - Smithsonian contributions to botany ; 80 . - Smithsonian contributions to botany ; 80 . LCCN: 4188 Subjects--Topical Terms: Botánica--Clasificación.Musgos.