Leadership and fecal coliforms: Walkerton 2000.
D004927:Escherichia coli Infections / Q000517:prevention & control*; D019453:Escherichia coli O157; D049673:History, 20th Century; D006801:Humans; D007857:Leadership; D009864:Ontario; D011634:Public Health; D014871:Water Microbiology; D014881:Water Supply