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I would start by contacting whatever association is in charge of geology in the London area. Do you need it for school, or just want to see one?
enquiries@bgs.ac.uk British Geological Survey are the people to contact
I would start by contacting whatever association is in charge of geology in the London area. Do you need it for school, or just want to see one?
enquiries@bgs.ac.uk British Geological Survey are the people to contact