Environmental Policy Collection - 2 Matching Results
- Algae in water supplies: an illustrated manual on the identification, significance, and control of algae in water supplies.
- A manual designed to help "water analysts and others who deal with the many problems and effects associated with the presence of algae in water supplies."
- Managing farm fields, wetlands, and waters for wild ducks in the South.
- Provides instructions for establishing ponds and marshes in order to attract wild ducks to farmlands. Discusses the recreational benefits of watching and hunting ducks.