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EVS-ISO 5667-4:2007 Vee kvaliteet : proovivõtt. Osa 4, Juhised looduslikest ja tehislikest järvedest proovide võtmiseks = Water quality : sampling. Part 4, Guidance on sampling from lakes, natural and man-made (ISO 5667-4:1987)
Translator: Valdu Suurkask, Author: Eesti Standardikeskus