Guide to reading & writing Japanese
Charles E. Tutle Co.Inc, 1959,
Buku Referensi
Indonesia's competitiveness in Japanese market
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Nipponia : Menelusuri Jepang
Heibonsha,
Majalah, Jurnal, Buletin
Japanese Retro - modern engines of innovation
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A newvdeparture in the Japanese minimum wage legislation
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