Author: WOOD, E.M.R.
Title: The Lower Ludlow Formation and its graptolite fauna.
Description: 1900. Quart. J. geol. Soc. LVI-2; pp. 415-490, 27 fig. 2 fold-out tables, 1 fold-out map, 1 pl. h.t. with graptolites. Orig. extract, plain new wrps. very good, uncut.

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