Ringyō Shikenjō gojūnenshi
By: [henshū Ōita-ken Ringyō Shikenjō]
Publisher: Ōita-ken Ringyō Shikenjō
Published: 1998
Place of publication: Hita-shi
Language: jpn
Number of pages: 99
Subjects: Ōita-ken Ringyō Shikenjō; History
Other titles: Ringyō Shikenjō 50-nenshi; Ōita-ken Ringyō Shikenjō gojūnenshi
Notes: Cover title.

Includes bibliographical references (p. 60).