Botanic gardens in a changing world : the proceedings of the third International Botanic Gardens Conservation Congress held at Rio de Janeiro on the 19th-25th October 1992 /
International Botanic Gardens Conservation Congress(3rd :1992 :Rio de Janeiro, Brazil)
Hobson, Christopher.
Botanic Gardens Conservation International.
Kew : Botanic Gardens Conservation International,
1996.
Cover title.
Includes bibliographical references.