Geology of the country around Cadair Idris : memoir for 1:50 000 geological sheet 149 (England and Wales)

British Geological Survey, Howells, M. F. (Malcolm Fletcher), Pratt, W. T., Woodhall, D. G., Leng, M. J., 1995

Main title:: Geology of the country around Cadair Idris : memoir for 1:50 000 geological sheet 149 (England and Wales)
Author/s:: British Geological Survey, Howells, M. F. (Malcolm Fletcher), Pratt, W. T., Woodhall, D. G., Leng, M. J.
Blwyddyn Cyhoeddi:: 1995

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Main title:: Geology of the country around Cadair Idris : memoir for 1:50 000 geological sheet 149 (England and Wales)
Author/s:: British Geological Survey, Howells, M. F. (Malcolm Fletcher), Natural Environment Research Council, Pratt, W. T., Woodhall, D. G., Leng, M. J.
Blwyddyn Cyhoeddi:: 1995