[Hygienic problems of rural water supply and ways to their correction].
Spirin
V F
VF
Orlov
A A
AA
D004787:Environmental Pollution / Q000517:prevention & control*; D006801:Humans; D011634:Public Health / Q000592:standards* / Q000639:trends*; D012424:Rural Population; D012426:Russia; D014881:Water Supply / Q000592:standards*