Environment Canada (1981), The National Inventory of Municipal Waterworks and Wastewater Systems in Canada (MUNDAT), 1981, Pollution Data Branch, Environment Canada, Ottawa, Ontario, Canada.
Environnement Canada, The National Inventory of Municipal Waterworks and Wastewater Systems in Canada (MUNDAT), 1981, Direction des données sur la pollution, Environnement Canada, Ottawa, Ontario, Canada, 1981.