UNESCO

Project aqua : a source book of inland waters proposed for conservation

1971 Luther, H. | Rzóska, J. | Worthington, E. B. |

United Nations list of national parks and equivalent reserves, part 2

1962

First World Conference on National Parks : proceedings

1964

Soil and water conservation. Vegetation controls erosion. Dams and landscapes. Ecology and landscapes

1960

Protégez aujourd'hui le monde de demain

1955

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 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. |

A guide to teaching happy living through conservation

1953 Palmer, E. Laurence |

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