Kōtsū ni kansuru zasshibetsu choshabetsu indekkusu
Subtitle: un'yu kōtsū ni kansuru chōsa kenkyū kōmoku no bunrui seiri
Series: Un'yu keizai kenkyū shiryō
Publisher: Un'yu Keizai Kenkyū Sentā
Published: 1991
Place of publication: Tōkyō
Language: jpn
Number of pages: 338