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_aE.U.A. Soil Conservation Service _934964 |
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| 245 | _aIrrigation | ||
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_aWashington : _bThe Service, _c1959- |
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| 300 |
_av. _b: ilus. |
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| 490 |
_aNational Engineering Hanbook. Section _v; 15 |
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| 500 | _aLa biblioteca tiene: v.1 Soil plant-water relationships.--v.4 Boder irrigation.--v.8 Irrigation pumping plants.--v.9 Measurement of irrigation water.--v.11 Sprinkler irrigation.--v.12 Land leveling | ||
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_aIrrigación. _960366 |
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_aSuelos _xConservación. _9110283 |
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_aNational Engineering Hanbook. Section _v; 15 _980342 |
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