1. Standard Methods for the Examination of Water and Wastewater;American Public Health Association,1975
2. Profiles in the unsaturated and saturated zones, Gronjoj, Denmark;Andersen,1974
3. Management of the Greenbrook Well field;Beland,1977
4. The Physiography of Southern Onario;Chapman,1966
5. The Geochemistry of Natural Waters;Drever,1988