Okayama-ken no rōdō jijō
Subtitle: Okayama-ken rōdō jōkyō chōsa oyobi maigetsu kinrō tōkei chōsa yori : Shōwa 62-nen
Publisher: Okayama-ken Kikakubu
Published: 1988
Place of publication: [Okayama-shi]
Language: jpn
Number of pages: 112