Shinshin shōgaiji no gengo kōdō no keisei to hyōka ni kansuru kenkyū
Subtitle: tokubetsu kenkyū chūkan hōkokusho
Publisher: Kokuritsu Tokushu Kyōiku Sōgō Kenkyūjo
Published: 1989
Place of publication: Yokosuka-shi
Language: jpn
Number of pages: 115