Toshi ni okeru kaiteki kankyō no sōzō ni tsuite
Series: Heisei gannendo dai 32-kai kaigai kenshū hōkoku -- no. 4; Kaigai kenshū hōkoku -- Heisei 1-nendo, dai 32-kai, no. 4.
Publisher: Tōkyō-to Shokuin Kenshūjo
Published: 1991
Place of publication: Tōkyō
Language: jpn
Number of pages: 35
Notes: Written by Mori Shinhiko.  Cf. pref.