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Mamoru NASHIKI
Tohoku National Agricultural Experiment Station:(Present address)National Grassland Research Institute
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Ryohei MEGURO
Tohoku National Agricultural Experiment Station
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Eiki FUKUDA
Tohoku National Agricultural Experiment Station
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Tetsuo SUYAMA
Tohoku National Agricultural Experiment Station:(Present address)National Grassland Research Institute
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Ken OHTA
Tohoku National Agricultural Experiment Station:(Present address)National Grassland Research Institute