Our American land
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Main Authors: | , |
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Format: | Texto biblioteca |
Language: | |
Published: |
Washington, DC (USA) USDA
1987
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Subjects: | LAND USE, LAND MANAGEMENT, HISTORY, SOIL CONSERVATION, UTILISATION DES TERRES, GESTION FONCIERE, UTILIZACION DE LA TIERRA, ORDENACION DE TIERRAS, HISTOIRE, CONSERVATION DES SOLS, HISTORIA, CONSERVACION DE SUELOS, |
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