État de la protection de la nature dans le monde en 1950.
Subtitle: The position of nature protection throughout the world in 1950.
Contributors: International Union for the Protection of Nature.
Publisher: Union internationale pour la protection de la nature
Published: 1954
Place of publication: Bruxelles
Language: fre
Number of pages: 151
Subjects: Nature conservation; National parks and reserves; Natural areas
Other titles: Position of nature protection throughout the world in 1950.
Notes: Addendum to report published in 1951.

French and English, with foreword in both.