[Methods for checking and evaluating analytical results of natural water supply (author's transl)].
D000838:Anions / Q000032:analysis; D002412:Cations / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D010100:Oxygen / Q000032:analysis; D014871:Water Microbiology; D014881:Water Supply / Q000032:analysis*
D000838:Anions; D002412:Cations; D010100:Oxygen