TY  - BOOK
TI  - 1. Recreational use of River Terraces 2. Revetment Harmonious with a River's Environment 3. Improvement of Reservoir Water Quality 4. River Purification Projects 5. Water Quality Improvement Vessel 6. Biological Index of Water Quality in Japan [video cd]
PY  - 0000///[date of publication not identified]
CY  - Japan
KW  - Ricers
KW  - Japan
KW  - Water quality
ER  -