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Federation 2012 Standard Methods for the Examlnatlon of Water and Waste Water 22nd loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentssitereader033viewer20220422005ea0483fabece4652f15c967html5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=american-public-health-association-american-water-works-association-and-waterhtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: · American Public Health Association American Water Works Association and Water Envlronment Federation 2012 Standard Methods for the Examlnatlon of Water and Waste Water 22nd loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentssitereader033viewer20220422005ea0483fabece4652f15c967html5thumbnails3jpg 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and Water Envlronment Federation 2012 Standard Methods for the Examlnatlon of Water and Waste Water 22nd loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentssitereader033viewer20220422005ea0483fabece4652f15c967html5thumbnails5jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=american-public-health-association-american-water-works-association-and-waterhtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: · American Public Health Association American Water Works Association and Water Envlronment Federation 2012 Standard Methods for the Examlnatlon of Water and Waste Water 22nd loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC 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