A chalk revolution: what have we done to the Chalk of England? - ScienceDirect
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Chalk Group - Wikipedia
Principal aquifers in England and Wales | Aquifer, shale and clay maps | Aquifers and shales | Groundwater | Our research | British Geological Survey (BGS)
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Category:Chalk of the UK - MediaWiki
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Map of England and Wales, showing (i) the distribution of Upper... | Download Scientific Diagram
DISCOVERING FOSSILS | What is chalk and how does it form?
Rock of ages: how chalk made England | Geology | The Guardian
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