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TAKASHI KURIHARA
R & D Center, Yuka Medias Co., Ltd., Ami, Inashiki, Ibaraki 300-03, Japan
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JUNKO HAYASHI
R & D Center, Yuka Medias Co., Ltd., Ami, Inashiki, Ibaraki 300-03, Japan
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TOHRU MATSUOKA
R & D Center, Yuka Medias Co., Ltd., Ami, Inashiki, Ibaraki 300-03, Japan
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AKIO ITO
R & D Center, Yuka Medias Co., Ltd., Ami, Inashiki, Ibaraki 300-03, Japan