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_aNational Drainage Symposium ( _n1 _d: 1971 _c: Chicago, Ill.) _980337 |
| 245 | _aProceedings | ||
| 260 |
_aSt. Joseph, Mich. : _bAmerican Society of Agricultural Engineers, _c(1972?) |
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| 300 |
_a56 p. _b: ilus. |
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| 590 |
_aBATCH-UPD _b10 _c20130110 _lUCH01 _h1422 |
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_aCONVERSION _b10 _c20130109 _lUCH01 _h1317 |
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_aDrenaje. _934190 |
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_aDrenaje _xCongresos. _934197 |
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_c30686 _d30686 |
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