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 cassette]
PY  - 0000///[date of publication not identified]
CY  - Japan
KW  - Ricers
KW  - Japan
KW  - Water quality
ER  -