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| Utgitt
| Port Washington, N.Y. : Water Information Center , [1973]
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| Omfang
| |
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| Opplysninger
| "Reproduced ... from section 16--drainage of agricultural land of the national engineering handbook ... issued in 1971 by the Soil Conservation Service, U.S. Department of Agriculture."
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| Emner
| |
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| ISBN
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