Yoshiaki Ishikawa

• Daiokishin-rui no hōkisei to taisaku gijutsu
• Kaisetsu Daiokishin-rui taisaku tokubetsu sochihō
• Kore kara no haikibutsu shori to chikyu kankyo
• Saisentan no gomi shori yōyū gijutsu