Obinoko to obinoko kikai
Subtitle: obinoko no seinō to metatehō ni kansuru gainen ni tsuite
By: [chosakusha] Okamoto Kikai Seisakujo Gijutsubu
Publisher: Okamoto Kikai Seisakujo
Published: 1938
Place of publication: Ōsaka-shi
Language: jpn
Number of pages: 101
Other titles: Obinokogiri to obinokogiri kikai