
The Wenlock graptolites of the Ludlow district, Shropshire, and their stratigraphical significance
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Citations
HOLLAND, C. H., RICKARDS, R. B., WARREN, P. T. 1969. The Wenlock graptolites of the Ludlow district, Shropshire, and their stratigraphical significance. Palaeontology, 12, 4, 663–683.