Report copyright - THE STUDY ON RESTRUCTURING OF WATER SUPPLY …3.12 Selenium (Se) ditto 0.01 GOST 19413-89 3.13 Strontium (Sr) ditto 7 GOST 23950-88 3.14 Fluoride (F) ditto 0.7 GOST 4386-89 3.15 Chromium
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