Naze shinkō wa hitsuyō na no ka
Subtitle: seimei no tōtosa o kangaeru
By: [chosha Kawai Hajime].
Series: Sōka Gakkai seinen shisō shirīzu ;; 28; Sōka Gakkai seinen shisō shirīzu ;; 28.
Publisher: Seikyō Shinbunsha
Published: 1982
Place of publication: Tōkyō
Language: jpn
Number of pages: 164
Subjects: Sōka Gakkai -- Doctrines -- Juvenile literature.