Chikuryoku kaikon no jissai
By: [henshü Nōrinshō Kaitaku Kenkyūjo]
Series: Kaitaku panfuretto -- dai 7-shū
Publisher: Nōrinshō Kaitaku Kenkyūjo
Published: 1949
Place of publication: Tōkyō
Language: jpn
Number of pages: 82
Subjects: Plowing