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100 0 0 _aNieuwenhuis, G. J. A.
_981298
245 _aEffect of perdoration and filter material on entrance resistance and effective diameter of plastic drain pipes
500 _aSobretiro de : Agricultural Water Management 2 : 1-9, 1979
590 _aBATCH-UPD
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590 _aCONVERSION
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650 1 4 _aTuberías.
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700 0 _aWesseling, Jans.
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