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EVS-EN 60027-7:2010 Elektrotehnikas kasutatavad tähised. Osa 7, Elektrienergia genereerimine, edastamine ja jaotamine = Letter symbols to be used in electrical technology. Part 7, Power generation, transmission and distribution (IEC 60027-7:2010)
Agronomy Research ; 2 vol. 13 (2015)Eesti Maaülikool, Eesti Maaviljeluse Instituut, Lithuanian Institute of Agriculture, Lithuanian Institute of Horticulture, Lithuanian University of Agriculture, Latvia University of Agriculture