Soil conservation.
| Main Author: | |
|---|---|
| Format: | Book |
| Published: |
New York,
McGraw-Hill,
1939.
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| Series: | McGraw-Hill series in geography
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| Subjects: |
| Physical Description: | 993 p. illus. tables. 24 cm. |
|---|---|
| Bibliography: | Bibliographical footnotes. |