Orchids : status survey and conservation action plan /
Hágsater, Eric.
Dumont, Vinciane.
Pridgeon, Alec M.
IUCN/SSC Orchid Specialist Group.
Gland, Switzerland ; Cambridge : IUCN,
c1996.
On title page: IUCN/SSC Orchid Specialist Group
Bibliography: p139-153
Orchids.
Plant conservation.
Ecological surveys.