早見, 均, Ikeda, Ayu, Suga, Mikio, Wong, Yu Ching, 吉岡, 完治Keio Economic Observatory (Sangyo Kenkyujo), Keio University1995-05Keio Economic Observatory occasional paper. E18
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Fujiwara, Koichi, 早見, 均, Ikeda, Ayu, Suga, Mikio, Wong, Yu Ching, 吉岡, 完治Keio Economic Observatory (Sangyo Kenkyujo), Keio University1995-06Keio Economic Observatory occasional paper. E21
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