| 31. | Largely working alone, he had made geological investigations over and had produced the promised geological map.
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| 32. | In that capacity, he was responsible for a multitude of geological maps of his native Swabia.
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| 33. | He decided to make a geological survey of Gibraltar that resulted in a detailed geological map.
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| 34. | He created the first geological map of England during the late 1790s and early 19th century.
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| 35. | Within the 20th Century there were three statewide geological maps produced prior to the 1976 map.
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| 36. | In 1815 he published the first geological map of Britain, based on a John Cary map.
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| 37. | The ministry has submitted a proposal, helped by the Asia Development Bank, for a detailed geological map.
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| 38. | He made a couple of geological maps.
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| 39. | In 1809 he made the earliest attempt at a geological map of the United States of America.
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| 40. | The first geological map of the U . S . was produced in 1809 by William Maclure.
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