IUCN

Procès-verbaux : septième Assemblée générale, Varsovie, 15-24 juin 1960 = Proceedings : seventh General Assembly, Warsaw, June 15-24 1960

1960

Procès-verbaux : sixième Assemblée générale, Athènes, septembre 1958

1960

The ecological effects of biological and chemical control of undesirable plants and animals : symposium

1961

Ecology and management of wild grazing animals in temperate zones : symposium

1961

Rare animals and plants of the Mediterranean region : symposium of the Survival Service

1959

Soil and water conservation. Natural aquatic resources

1959

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

1960

Erosion and civilizations. Conservation education. Atomic hazards

1959

Report on a survey of the rhinoceros area of Nepal, March and April 1959

1959 Gee, E. P. |

Nature protection throughout the world : dedicated to the memory of Dr. Hugo Salomón

1957 Dennler de la Tour, Georges |

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