P. M. Allen

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Geological Excursions in the Harlech Dome
Allen, P.M.; British Geological Survey

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� 5.14

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A Geological Survey in Transition (Corporate Strategy Books & Reports)
Allen, P.M.

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� 5.65

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Bryn-Teg Borehole, North Wales (Bulletin of the Geological Survey of Great Britain)
Allen, P.M.; Jackson, A.A.

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� 9

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Geology of the Country Around Harlech (Geological Memoirs & Sheet Explanations (England & Wales))
Allen, P.M.; British Geological Survey

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� 11.50

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