Ozon-sō hogo taisaku no dōkō
By: Aoki Mie
Series: Chōsa to jōhō -- dai 135-gō = -- Issue brief -- no. 135; Chōsa to jōhō -- dai 135-gō.
Publisher: Chōsa oyobi Rippō Kōsakyoku
Published: 1990
Place of publication: Tōkyō
Language: jpn
Number of pages: 11