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1
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2
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3
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4
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5
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6Published 1983“...National Academy...”
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7Published 1994“...National Academy...”
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8Published 1981“...National Academy...”
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9Published 1993“...National Academy Press...”
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10Published 1990“...The National Academy of Sciences of the...”
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11Published 1990“...The National Academy of Sciences of the...”
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12Published 1990“...The National Academy of Sciences of the...”
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13Published 1990“...The National Academy of Sciences of the...”
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14Published 1990“...The National Academy of Sciences of the...”
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15Published 1990“...The National Academy of Sciences of the...”
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16Published 1990“...The National Academy of Sciences of the...”
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17Published 1990“...The National Academy of Sciences of the...”
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18
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19
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20