National Conference on Soil Conservation Policies (1979, Washington, D.C.). Soil conservation policies : An assessment
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| Format: | Texto biblioteca |
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| Language: | eng |
| Published: |
Ankeny, IA, USA Soil Conservation Society of America (SCSA)
1979
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| Subjects: | Soil conservation, Policies, Environment, USA, Conservación de suelos, Políticas, Medio ambiente, EUA, Proceedings, Memorias, Books, |
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