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Dyfyniad Arddull ChicagoWilliams, M., P. Stone, D. Siveter, and P. Taylor. Upper Ordovician Ostracods from the Cautley District, Northern England: Baltic and Laurentian Affinities. 2001.
Dyfyniad MLAWilliams, M., et al. Upper Ordovician Ostracods from the Cautley District, Northern England: Baltic and Laurentian Affinities. 2001.
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