DALA SHAROITIDA SUVNI ODDIY USULDA XLORLASH, KAUGULYANT DOZASINI ANIQLASH, SUVNI ZARARSZLANTIRISH UCHUN TABLETKANI YAROQLIGINI ANIQLASH
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Learn about methods for disinfecting water in field conditions using chlorine solutions and determining the dosage of disinfectant tablets to purify water in emergency situations
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