Upper Silurian and Lower Devonian spore assemblages from the Welsh Borderland and South Wales

12 2 July 201 252

RICHARDSON, J. B., LISTER, T. R. 1969. Upper Silurian and Lower Devonian spore assemblages from the Welsh Borderland and South Wales. Palaeontology12, 2, 201–252.

J. B. Richardson and T. R. Lister The Palaeontological Association (Free Access)