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Pētersone, Laila, AS Valmieras stikla šķiedra (Latvia)
Petriņa, Zaiga, University of Latvia (Latvia)
Poršņovs, Dmitrijs, University of Latvia (Latvia)
Preikšs, Ilmārs, Latvian Agricultural University (Latvia)
Purmalis, Oskars, University of Latvia (Latvia)
ISSN: 2255-8713