Shiritsu kōkō ni okeru kaigai to no kōryū
Subtitle: Kyōmu Jitsumu Kenkyūkai hōkoku
Series: Chōsa shiryō -- 158, 171; Chōsa shiryō (Nihon Shigaku Kyōiku Kenkyūjo) -- 158, 171.
Publisher: Nihon Shigaku Kyōiku Kenkyūjo
Published: 1991
Place of publication: Hachiōji-shi
Language: jpn
Notes: Vol. 2 has subtitle: Kokusai rikai kyōiku no genjō.