Gyogyō chōsa hōkokusho
Subtitle: Chibamaru, Daini Chibamaru, Fusamimaru, Daini Fusamimaru : Shōwa 49-nendo
Publisher: Chiba-ken Suisan Shikenjō
Published: 1975
Place of publication: [Chikura-machi]
Language: jpn
Number of pages: 47
Notes: Cover title.