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The effect of copper ions on submerged hornwort (Ceratophyllum demersum L.)
Bochka V.V., Grigoriev Y.S., Sorokina G.A., Kornyakova K.I.
Environmental education of students by means of hydrobotany
Solovieva V.V., Semenov A.A., Yaitsky A.S.
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