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Taizo SAKATA
Faculty of Fisheries, Kagoshima University, Kagoshima 890, Japan
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Haruo SUGITA
Faculty of Agriculture, Kyoto University
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Tomotari MITSUOKA
The Institute of Physical and Chemical Research
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Daiichi KAKIMOTO
Faculty of Fisheries, Kagoshima University, Kagoshima 890, Japan
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Hajime KADOTA
Faculty of Agriculture, Kyoto University