Rapport de la mission WWF/UICN : Repoblika Demokratika Malagasy
1981
Hoffmann, Lukas |
Petter, Jean-Jacques |
Portas, Pierre |
Hoffmann, Lukas
Proposals for nature conservation in northern Greece : a report
1971
Hoffmann, Lukas |
Bauer, W. |
Müller, G. |
Project Mar : the conservation and management of temperate marshes, bogs and other wetlands. Volume 1. Proceedings of the Mar conference
1964
Hoffmann, Lukas |