Oasmann, R. F.
Classification and use of protected natural and cultural areas: a report prepared within the IUCN Secretariat in collaboration with the IUCN Commission on Ecology and International Commission on Natural Parks... / R. F. Dasmann - Morges, Switzeland: International Union for Conservation of Nature and Natural Resources, 1973 - 24p. - IUCN occasional paper; no.4 .
Natural areas
Natural parks and reserves
Classification and use of protected natural and cultural areas: a report prepared within the IUCN Secretariat in collaboration with the IUCN Commission on Ecology and International Commission on Natural Parks... / R. F. Dasmann - Morges, Switzeland: International Union for Conservation of Nature and Natural Resources, 1973 - 24p. - IUCN occasional paper; no.4 .
Natural areas
Natural parks and reserves