Dōryoku no setsuyaku
Subtitle: Power saving
Publisher: Kōjō Nōritsu Zōshin Kenkyūkai
Published: 1934
Place of publication: [Ōsaka-shi]
Language: jpn
Number of pages: 13
Notes: Contains vol. 9, no. 4 to vol. 11, no. 4; issued bi-monthly.