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_aImprovement of weak foundation of paddy fields by subsurface drainage system-field studies in the muda irrigation project area-technical bulletin no.18 / _cTsuneo Yamashita. |
| 260 |
_aJapan : _bTropical Agricultural Research Center, _cc1984. |
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| 300 |
_a71 pages : _bIllustrations ; _c26 cm. |
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| 999 |
_c6527 _d6527 |
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