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Bibliotheca Diatomologica: Volume 058: Benson, Mary Ellen and J. Patrick Kociolek (eds.): Freshwater diatom floristics of the late Eocene Florissant Formation, Clare's Quarry site, Central Colorado, USA. 2012. 34 pls. 4 figs. 136 p. gr8vo. Paper bd. (102609) 69.00
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