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EVS-EN ISO 5667-6:2016/A11:2020 Vee kvaliteet : proovivõtt. Osa 6, Juhised jõgedest ja muudest vooluveekogudest proovide võtmiseks = Water quality : sampling. Part 6, Guidance on sampling of rivers and streams (ISO 5667-6:2014)
Agronomy Research ; 1 vol. 3 (2005)Eesti Maaülikool, Latvia University of Agriculture, Aleksandro Stulginskio universitetas, Lithuanian Research Centre for Agriculture and Forestry, Vytautas Magnus Universitu Agrikulture Academy