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Keywords from Image Description:
The Quarterly journal of the Geological Society of London . BOULDERCLAY IN LINCOLNSHIRE Fig MAP part of NCOLNSHRE about mLes to cut inch jMzrsh Fen EH Gravel Sand KiJZafjfe Clay HI Chalky Clay ihflm IMH fca Cretaceous Rocks fflhr No Page Illustration biodiversitylibrary org Geological Society of London Biodiversity