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Sárkány-Kiss Endre; Ponta Michaela; Fodor Alpár; Telcean Ilie: Bioaccumulation of certain heavy metals by fish populations in the Criş/Körös rivers. In: The Cris/Körös rivers' valleys : a study of the geography, hydrobiology and ecology of the river system and its environment 2. pp. 327-334. (1997)
Sárkány-Kiss Endre; Fodor Alpár; Ponta Michaela: Bioaccumulation of certain heavy metals by unionidae molluscs in Criş/Körös rivers. In: The Cris/Körös rivers' valleys : a study of the geography, hydrobiology and ecology of the river system and its environment 2. pp. 209-219. (1997)
Hamar József; Zsuga Katalin; Fodor Alpár; Ponta Michaela: Chemical characteristics of the water and sediment of the Criş/Körös river system. In: The Cris/Körös rivers' valleys : a study of the geography, hydrobiology and ecology of the river system and its environment 2. pp. 103-114. (1997)
Levei Erika; Roman Cecilia; Roman Marius; Ponta Michaela; Frentiu Tiberiu: Soil pollution assessment in the Baia Mare area after partial closure of ore processing activities.
