Okayama-ken Suisan Shikenjō Shōwa jūninendo gyōmu hōkokusho
Publisher: Okayama-ken Suisan Shikenjō
Published: 1939
Place of publication: [Okayama-ken Oku-gun]
Language: jpn
Number of pages: 88
Other titles: Okayama-ken Suisan Shikenjō Shōwa 12-nendo gyōmu hōkokusho
Notes: Cover title.

"Shōwa jūyonendo Okayama-ken Suisan Shikenjō gyōmu jisshi yōkō" inserted.