Hokuman shuyōchi rōdō chingin chōsahyō
Subtitle: 3, 4-gatsu genzai
Series: Hokkei keizai shiryō -- dai 56-gō
Publisher: Mantetsu Hokuman Keizai Chōsajo
Published: 1937
Place of publication: [Harbin]
Language: jpn
Notes: Cover title.