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Keywords from Image Description:
The Quarterly journal of the Geological Society of London . Quart Journ Geo Soc Vol XKXVlll Pl BB Foord del rt 'Ktli Mintern Bros imp BALA NODULAR FEL SITES Pl Illustration biodiversitylibrary org Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London Geology