Dasmann, R. (1973). A system for defining and classifyng natural regions for purposes of conservation. IUCN.
Style de citation Chicago (17e éd.)Dasmann, R.F. A System for Defining and Classifyng Natural Regions for Purposes of Conservation. Morges, Switzerland: IUCN, 1973.
Style de citation MLA (9e éd.)Dasmann, R.F. A System for Defining and Classifyng Natural Regions for Purposes of Conservation. IUCN, 1973.
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