Spores in Devonian stratigraphic correlation. (In: A Field Guide to Selected Outcrop Area of the Devonian of Scotland, the Welsh Borderland and South Wales. P.F.Friend and B.P.L.Williams, editors)
Reference:
McGregor,D.C. (1978)
Spores in Devonian stratigraphic correlation. (In: A Field Guide to Selected Outcrop Area of the Devonian of Scotland, the Welsh Borderland and South Wales. P.F.Friend and B.P.L.Williams, editors) International Symposium on the Devonian System. The Palaeontological Association, Abstract.
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