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References
For a summary of the natural history of Upper Teesdale see:- Clapham, A.R. Ed., Upper Teesdale, Collins, London (1978).
See Coulson, J.N. in chapter 8 of ref. 1.
Ehrmann, P. Die Tierwelt Mitteleuropas II, Weichtiere, Molusca, & Meyer, Leipzing (1933).
Zilch, A. and Jaeckel, S.G.H. Ergänzung Tierwelt Mitteleuropas Weichtiere, Mollusca, Quelle & Meyer, Leipzig (1962).
Kerney, M.P. Late-glacial deposits on the chalk of South-East England, Phil. Trans. Ser. B 246, 203–254 (1963).
Kerney, M.P., Brown, E.H. and Chandler, T.J. The Late-glacial and Post-glacial history of the chalk escarpment near Brook, Kent, Phil. Trans. Ser. B 248, 135–204 (1964).
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Coles, B., Colville, B. A glacial relict mollusc. Nature 286, 761 (1980). https://doi.org/10.1038/286761a0
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DOI: https://doi.org/10.1038/286761a0