{TAIL ~ The combined treatment} is added, for example, to cooling water systems, {HEAD ~ paper and pulp mill systems}, pools, ponds, lagoons, lakes, etc., to control the formation of bacterial microorganisms, which may be contained by, or which may become entrained in, the system to be treated 
{ TAIL ~ The combined treatment } is added , for example , to cooling water systems , { HEAD ~ paper and pulp mill systems } , pools , ponds , lagoons , lakes , etc . , to control the formation of bacterial microorganisms , which may be contained by , or which may become entrained in , the system to be treated
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