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AuthorApsīte, Elga (1)Briede, Agrita (1)Hodireva, Vija (1)Krišjāne, Zaiga (1)Lukševičs, Ervīns (1)Nikodemus, Oļģerts (1)Rozīte, Maija (1)Stinkulis, Ģirts (1)Strautnieks, Ivars (1)Zelčs, Vitālijs (1)... View MoreSubjectantropogenic impact (1)antropogēnā slodze (1)humic substances (1)humusvielas (1)organic matter (1)organiskās vielas (1)surface waters (1)virszemes ūdeņi (1)... View MoreDate Issued1999 (3)1998 (3)1997 (1)1996 (3)1993 (1)