Denki Kagakukan nijūnenshi
By: [henshūsha Kobatake Yasurō].
Contributors: Kobatake, Yasurō.; Ōsaka Shiritsu Denki Kagakukan.
Publisher: Ōsaka Shiritsu Denki Kagakukan
Published: 1957
Place of publication: [Osaka]
Language: jpn
Number of pages: 298
Subjects: Ōsaka Shiritsu Denki Kagakukan -- History.
Other titles: Denki Kagakukan 20-nenshi.