| Registros del 1 al 3 de 3 encontrados |
1.- Geology of the Country around Bangor
Leveridge, B.E; Reedman, A.J.; Howells, M.F.
London: British Geological Survey, 1985
II / 30 - 2 - 36
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2.- Snowdonia
Howells, M.F.; Leveridge, B.E; Reedman, A.J.
London: Unwin Paperbacks, 1981
Rocks and fossils
IV/8-8-38
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3.- transgressive welded ash - flow tuffs among the Ordovician sediments of NE Snowdonia, N. Wales
Howells, M.F.; Francis, E.H.
1973
F - A / 1130
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