 281142A Marine pennate diatom frustule (Navicula sp.)
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 281142B Marine pennate diatom frustule (Navicula sp.)
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 281142C Marine pennate diatom frustule (Navicula sp.)
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 281142D Marine pennate diatom frustule (Navicula sp.)
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 28933A Fresh water pennate diatom (Navicula spp.)
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 28933B Fresh water pennate diatom (Navicula sp.)
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 28933C Fresh water pennate diatom (Navicula sp.)
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 28933D Fresh water pennate diatom (Navicula sp.)
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 28943A Moist soil pennate diatom (Navicula sp.)
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 28943B Moist soil pennate diatom (Navicula sp.)
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 28943C Moist soil pennate diatom (Navicula sp.)
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 28943D Moist soil pennate diatom (Navicula sp.)
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