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_aE.U.A. Soil Conservation Service _934964 |
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| 245 | _aDrainage | ||
| 260 |
_aWashington : _bThe Service, _c1959- |
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| 300 |
_a12 v. _b: ilus. |
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| 490 |
_aNational Engineering handbook section _v; 16 |
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| 500 | _aLa biblioteca tiene: v.1 Principles of draninage.-- v.2 Drainage survey, investigations and reports.-- v.3 Subsurface drainage of irrigated land in arid and semi-arid areas.--v.4 Subsurface drainage in humid areas.--v.5 Tile systems and appurtenances.-- | ||
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_aDrenaje. _934190 |
| 830 | 0 |
_aNational Engineering handbook section _v; 16 _980343 |
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