Hopkins, E. (1948). Water purification control. [y.y.]: The Wıllıams & Wılkıns Company.
Chicago Style CitationHopkins, Edward. Water Purification Control. [y.y.]: The Wıllıams & Wılkıns Company, 1948.
MLA CitationHopkins, Edward. Water Purification Control. [y.y.]: The Wıllıams & Wılkıns Company, 1948.
Warning: These citations may not always be 100% accurate.