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Influences of Water Insufficiency on Paddy Preparation Works by a Large-scale Contract Farmer
Tai-ichi SAKUMA [Institute of Agricultural and Forest Engineering¡¤University of Tsukuba ]
Masayoshi SATOH [Institute of Agricultural and Forest Engineering¡¤University of Tsukuba ]
Shino FUJII [College of Agrobiological Resources, University of Tsukuba]
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