講演予稿
Sakai, S. (2009) Presented at Kyoto Workshop on 3R (Reduce, Reuse and Recycle) and Waste Management, Kyoto, October 29, 2009
Sakai, S. (2009) Presented at Kyoto Workshop on 3R (Reduce, Reuse and Recycle) and Waste Management, Kyoto, October 29, 2009