Hansei "kōkusu" riyō ni kansuru chōsa
Series: Teion kanryū jigyō ni kansuru chōsa -- sono 1
Publisher: Teikoku Nenryō Kōgyō Kabushiki Kaisha Gijutsubu Chōsaka
Published: 1941
Place of publication: [Tokyo]
Language: jpn
Number of pages: 30