Nōkōchi kōhai bōshihō no kenkyū
Subtitle: dojō hozon taisaku to shite no kaidankō ni tsuite
Series: Hokkei chōsa toku -- dai 45-gō
Publisher: Mantetsu Hokuman Keizai Chōsajo
Published: 1942
Place of publication: [Harbin]
Language: jpn
Number of pages: 27
Subjects: Soil conservation
Notes: Cover title.

Translated probably from English.