Author:

Johnson,G.A.L.;Marshall,A.E.

Year:

1971

Title:

Tournaisian Beds in Ravensdale, Westmorland.

Reference:

Johnson,G.A.L. et al. (1971) Tournaisian Beds in Ravensdale, Westmorland. Proceedings of the Yorkshire Geological Society Vol. 38 # 2 P. 261- 280

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