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EVS-EN 772-5:2016 Müürikivide katsemeetodid. Osa 5, Aktiivsete lahustuvate soolade sisalduse määramine keraamilistes müürikivides = Methods of test for masonry units. Part 5, Determination of the active soluble salts content of clay masonry units
Eesti Standardikeskus, Eesti Ehitusmaterjalide Tootjate Liit