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1LEABHARFoilsithe / Cruthaithe 1966“…American Geological Institute…”
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2LEABHARFoilsithe / Cruthaithe 1968“…American Geological Institute…”
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3LEABHARFoilsithe / Cruthaithe 1967“…American Geological Institute…”
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4
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5LEABHARFoilsithe / Cruthaithe 1974“…American Geological Institute…”
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6LEABHARFoilsithe / Cruthaithe 1976“…American Geological Institute…”
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7
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8
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9LEABHARFoilsithe / Cruthaithe 1971“…American Geological Institute…”
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10LEABHARFoilsithe / Cruthaithe 1962“…American Geological Institute…”
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11LEABHARFoilsithe / Cruthaithe 1957“…American Geological Institute…”
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12
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13
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14LEABHARFoilsithe / Cruthaithe 1971“…American Geological Institute. Dept. of Geoscience Information…”
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15
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16LEABHARFoilsithe / Cruthaithe 1969“…American Geological Institute. Council on Education in the Geological Sciences…”
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17
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18IRISFoilsithe / Cruthaithe 1964“…American Geological Institute…”
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19
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20IRISFoilsithe / Cruthaithe 1960“…American Geological Institute…”
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