অনুরূপ উপাদানগুলি: Monitoring water in the 1990's :
- Water supply and pollution control /
- Wastewater treatment for pollution control /
- Water and wastewater treatment /
- Water works engineering : planning, design, and operation /
- Biological data in water pollution assessment : quantitative and statistical analyses : a symposium /
- Standard methods : for the examination of water and wastewater /