Dictionary of water and wastewater trademarks and brand names - Pankratz, Tom M. (Chelsea, Mich. Lewis Publishers, 1991)
Keywords: Water pollution control equipment industry -- United States -- Directories; Water pollution control equipment industry -- United States -- Trademarks -- Dictionaries; Water purification equipment industry -- United States -- Directoaries; Water purification equipment industry -- United States -- Trademarks -- Dictionaries; Water supply equipment industry -- United States -- Directories; Water supply equipment industry -- United States -- Trademarks -- Dictionaries