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Masao Haimura
Chūbu, Hanshin, Kita Kyūshū chihō ni okeru saikin no ritchi jijō to kūshū ni taishosuru kōjō bunsan no hōkō ni tsuite
Kaitei jūyō busshi kakakuhyō
Man-Shi ni okeru rōdōryoku jijō ni kansuru chōsa
Taiwan no shinkō kōgyō to ritchi jōken no gaiyō ni tsuite