Detailed Notes on chemical oxygen demand test
Drinking water packed with Filth and grime may possibly operate fine to get a tomato plant but would you want to drink it? H2o top quality might be thought of as a evaluate of the suitability of water for your... ByC O D = 8000 ( b − s ) n T h e t i c h m a u t h u displaystyle COD= frac 8000(b-s)n The tich mau thu The math and geometry