Guidelines for modern resource management : soil, land, water, air /
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| Main Author: | |
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| Format: | Texto biblioteca |
| Language: | d |
| Published: |
Columbus : C.E. Merrill,
1983
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| Subjects: | CONSERVATION OF NATURAL RESOURCES, CONSERVATION OF NATURAL RESOURCES, > UNITED STATES, ENVIRONMENTAL PROTECTION, ENVIRONMENTAL PROTECTION, > UNITED STATES, |
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