International Union for the Protection of Nature (IUPN)

Proceedings and papers of the Technical Meeting held at The Hague, 20, 21 and 22 September 1951

1952

Procès-verbaux et rapports de la Réunion technique tenue à Caracas, du 3 au 9 septembre 1952 conjointement avec la troisième Assemblée générale de l'institution

1954

Etat de la protection de la nature dans le monde en 1950 = The position of nature protection throughout the world in 1950

1951

Proceedings and reports of the third General Assembly held in Caracas, Venezuela, 2 to 9 September 1952 at the Colegio de Medicos de Venezuela : statutory meetings

1952

Proceedings and reports of the second session of the General Assembly held in Brussels, 18-23 October 1950 in the Institut de Sociologie Solvay de l'Université Libre de Bruxelles

1951 Bernard, Ch. J. |

Proceedings and papers : International Technical Conference on the Protection of Nature, Lake Success, NY, 22-29 August 1949

1950 Harroy, Jean-Paul |

Preparatory documents to the International Technical Conference on the Protection of Nature, August 1949, United States

1949

International Union for the Protection of Nature established at Fontainebleau, 5 October 1948

1948 Bernard, Ch. J. |

Pro natura, organe de l'Union Internationale Provisoire pour la Protection de la Nature

1948

Union Internationale pour la Protection de la Nature. Bulletin d'information

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