1. Editing Committee on All about Paper. (
1985). All about paper: I Gihodo Publishing 110–114.
2. Environmental Planning Agency. (
1996). White paper on the environment general remarks 213.
3. Ishi H. (
1992). Acid rain Iwanami Shinsho 69–72.
4. Makino N. (
1998). Environment—Big business PHP Institute 26–28.
5. Nakanishi J. (
1994). Environmental policy on water Iwanami Shinsho 49–52.