Tokubetsu kenkyū "Shizen Jōka Kinō ni yoru Suishitsu Kaizen ni Kansuru Sōgō Kenkyū" Shinpojūmu hōkoku
By: Dai 3-kai Shizen Jōka Shinpojūmu ; [henshū Kokuritsu Kōgai Kenkyūjo]
Publisher: Kokuritsu Kōgai Kenkyūjo
Published: 1986
Place of publication: Ibaraki-ken Tsukuba-gun Yatabe-machi
Language: jpn
Number of pages: 164