U.S. Army Public Health Command (2011). Ultraviolet Light Disinfection in the Use of Individual Water Purification Devices.
https://phc.amedd.army.mil/PHC%20Resource%20Library/Ultraviolet%20Light%20Disinfection %20in%20the%20Use%20of%20Individual%20Water%20Purification%20Devices.pdf

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