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| ZYGNEMA |
ZYGNEMA, VAUCHERIA E FRAGILARIA |
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| SPIROGYRA |
FRAGILARIA |
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| VAUCHERIA |
OEDOGONIUM |
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| COSMARIUM |
CYMBELLA |
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| SPIROGYRA IN CONIUGAZIONE |
ZYGNEMA |
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| SPIROGYRA |
ZYGNEMA |
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CLOSTRIDIUM
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COSMARIUM |
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| CHARA |
CHARA |
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