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Discoveries and covers not previously recorded

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Reference numbers in square brackets and artists' initials are explained here


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220

221.1

221.2

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233. Great Britain index diagram, mauve. Geological Survey Ten Mile Map (1:625,000). Both published by IGS (now BGS)

1. Both sheets highlighted, First Edition (Quaternary), 1977233.1


2. Relevant sheet highlighted Third Edition (Solid), 19793.2

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235


236


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238



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