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1Cyhoeddwyd 1973“...Palaeontological Association ; Distributed by Blackwell],...”
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2Cyhoeddwyd 1988“...Published for the Geological Society by Blackwell Scientific Publications ; Blackwell Scientific Publications, distributor,...”
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3Cyhoeddwyd 1984“...Published for Geological Society by Blackwell Scientific,...”
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4Cyhoeddwyd 1984“...Published for the Geological Society by Blackwell Scientific,...”
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5Cyhoeddwyd 1985“...Published for the Geological Society by Blackwell Scientific,...”
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6Cyhoeddwyd 1984“...Published for the Geological Society by Blackwell Scientific,...”
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7Cyhoeddwyd 1986“...Published for the Geological Society by Blackwell Scientific,...”
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8Cyhoeddwyd 1986“...Published for the Geological Society by Blackwell Scientific,...”
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9Cyhoeddwyd 1986“...Published for Geological Society by Blackwell Scientific,...”
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10Cyhoeddwyd 1986“...Published for the Geological Society by Blackwell Scientific,...”
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11Cyhoeddwyd 1986“...Published for the Geological Society by Blackwell Scientific,...”
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12Cyhoeddwyd 1981“...Published for the Geological Society of London by Blackwell Scientific ; distributed by Blackwell Mosby Book Distributors,...”
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13Cyhoeddwyd 1983“...Published for The Geological Society of London by Blackwell Scientific,...”
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14Cyhoeddwyd 1987“...Published for the Geological Society by Blackwell Scientific Publications,...”
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15Cyhoeddwyd 1988“...Published for the Geological Society by Blackwell Scientific Publications,...”
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16Cyhoeddwyd 1987“...Published for the Geological Society by Blackwell Scientific Publications,...”
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17Cyhoeddwyd 1987“...Published for the Geological Society by Blackwell Scientific Publications,...”
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18Cyhoeddwyd 1987“...Published for the Geological Society by Blackwell Scientific Publications,...”
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19Cyhoeddwyd 1987“...Published for the Geological Society by Blackwell Scientific Publications,...”
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20Cyhoeddwyd 1988“...Published for the Geological Society by Blackwell Scientific Publications,...”
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