Ōma no kenkyū ; fu, Futsuryō Indoshina ni okeru ōma
Series: Nanʼyō shiryō -- 9; Nanʼyō shiryō -- dai 9-gō.
Publisher: Nanʼyō Keizai Kenkyūjo
Published: 1942
Place of publication: Tōkyō
Language: jpn
Number of pages: 45
Subjects: Jute
Notes: Cover title.