1. Standard Methods for the Examination of Water and Wastewater;APHA,1989
2. Water Quality in Warmwater Fish Ponds;Boyd,1984
3. Bottom Soils, Sediments and Pond Aquaculture;Boyd,1995
4. Limitation of marine phytoplankton reproductive rates by zinc, manganese and iron;Brand;Limnology and Oceanography,1983
5. Heavy metal concentrations in Ontario fish;Brown;Bulletin of Environmental Contamination and Toxicology,1977