Author: Blake, Rev. F.J., 1880.:
Title: On the Portland rocks of England.
Description: Quart. Jour. Geol. Soc. London, 36 (142): pp. 189-236, 1 fold. pl. of sections, several figs. of fossil molluscs on 2 lithogr. pls., few sections and fossil lists in text, notes & refs. Plain new wrs.

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