Kokumotsu kensa sōgyō 20-shūnen kinenshi
Publisher: Ibaraki-ken Nōgyōshi Hensankai
Published: 1967
Place of publication: [Mito-shi]
Language: jpn
Number of pages: 43
Other titles: Kokumotsu kensa sōgyō nijisshūnen kinenshi
Notes: Cover title.

"Nōgyōshi naibu shiryō dai 15-gō."