Biotic provinces of the world : further development of a system for defining and classifying natural regions for purposes of conservation
1974
IUCN
List of mammals which have become extinct or are possibly extinct since 1600 : an extension and updating of the list drawn up by the late James Fisher in 1968
1973
Goodwin, Harry A. |
Goodwin, J. M. |
A system for defining and classifying natural regions for purposes of conservation : a progress report
1973
Dasmann, Raymond Fredric |
An ecological survey of the proposed Volcano Baru National Park, Republic of Panama : report of an investigation carried out between 9 February and 9 March 1972
1973
LaBastille, Anne |
Classification and use of protected natural and cultural areas : a report
1973
Dasmann, Raymond Fredric |
Propositions pour la création du Parc national ivoirien de Taï : rapport d'une mission d'étude en Côte d'Ivoire
1973
Rahm, Urs |
Proposals for nature conservation in northern Greece : a report
1971
Hoffmann, Lukas |
Bauer, W. |
Müller, G. |
