Okayama-ken Suisan Shikenjō Shōwa jūsannendo gyōmu hōkokusho
Publisher: Okayama-ken Suisan Shikenjō
Published: 1940
Place of publication: [Okayama-ken Oku-gun]
Language: jpn
Number of pages: 99
Other titles: Okayama-ken Suisan Shikenjō Shōwa 13-nendo gyōmu hōkokusho
Notes: Cover title.

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