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Algae --- Canada --- North America --- Quaternary --- Tertiary --- fossils --- Bacillariophyta = Diatoms = Diatomeae
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Chemistry. --- Geological surveys. --- Geology. --- Groundwater. --- Aquifers. --- Springs. --- Water quality. --- Wells.
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Chemistry. --- Geological surveys. --- Geology. --- Groundwater. --- Aquifers. --- Springs. --- Water quality. --- Wells.
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