| 11. | It plans to switch over to a 3D digital model of geological maps.
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| 12. | 1815 published the first geological map of the British Isles.
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| 13. | In his later life he collaborated on geological maps with the geologist William Smith.
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| 14. | In 1883 the two men published a geological map on the environs of Br�nn.
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| 15. | Bailey Willis produced a geological map of the U . S . in 1906.
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| 16. | Geological map of the Ranigunj coal fields by W . L . Wilson published.
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| 17. | Extensive surveys and geological maps were made at that time.
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| 18. | He produced a geological map of the south Wales coalfield.
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| 19. | 1815 published the first geological map of the British
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| 20. | In 1815 published the first geological map of the
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