Ōkawa Ryūhō no shōtai
Subtitle: seijin ka kyōjin ka : "Kōfuku no kagaku" nanafushigi
By: Hayakawa Kazuhiro cho.
Series: News package chase -- 075
Publisher: Aipekku Puresu
Published: 1991
Place of publication: Tōkyō
Language: jpn
Number of pages: 62
Subjects: Ōkawa, Ryūhō, -- 1956-; Kōfuku no kagaku.