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1Published 1992“...British Geological Survey...”
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2
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3Published 1993“...British Geological Survey...”
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4Published 1993“...British Geological Survey...”
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5Published 1996Edition: 4th ed., compiled by M.G. Sumbler.“...British Geological Survey...”
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6
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7Published 1995“...British Geological Survey...”
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8Published 1997“...British Geological Survey...”
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12Published 1986“...British Geological Survey...”
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13Published 1987Edition: 3rd ed.“...British Geological Survey...”
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18Published 1989Edition: 3rd ed. /“...British Geological Survey...”
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