"Urtans, Andris Viesturs" - Selaus tekijän mukaan Luonnonvarakeskuksen julkaisut
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Guidelines for the best technical solutions and practices for the wastewater treatment in scattered dwelling areas, Summary of best practices and solutions. VillageWaters report – Version 2.0
Urtāne, Loreta; Pertsov, Aleksej; Urtans, Andris Viesturs; Ernšteins, Raimonds; Vorne, Virpi; Vieraankivi, Marja-Liisa; Česonienė, Laima; Dulova, Niina; Eymontt, Andrzej
VillageWaters Project Research about Wastewater Treatment Systems (University of Latvia, 2019)