Kōfuku no genri
Subtitle: kyūseishu tatsu
By: Ōkawa Ryūhō.
Edition: Shohan
Series: Kyūsei no genri 3-busaku = -- The principle -- 1
Publisher: Kōfuku no Kagaku Shuppan
Published: 1990
Place of publication: Tōkyō
Language: jpn
Number of pages: 179
Subjects: Kōfuku no Kagaku; Happiness; Love