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anthropogenic eutrophication (1) |
cold acid method (1) |
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Dojkinci River (1) |
ecology (2) |
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anthropogenic eutrophication (1) |
cold acid method (1) |
Diatoms (2) |
Dojkinci River (1) |
ecology (2) |
light microscope (1) |
Pešter plateau (1) |