TRANSACTIONS

OF THE

NATURAL HISTORY SOCIETY

OF

NORTHUMBRIA

Editor:
R. B. CLARK

JOHNSON, G. A. L., AND RICHARDSON, G. (1990).
Coal Measures of the River Wear Gorge at Durham, England
Trans. Nat. Soc. Northumb. vol.55, pt.2, pp.84-96

THE NATURAL HISTORY SOCIETY OF NORTHUMBRIA
THE HANCOCK MUSEUM
NEWCASTLE UPON TYNE NE2 4PT

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