1
Published: [2022]-
2
Published: 1976.
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3
Published: 2008.
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4
Published: 2011.
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5
Published: 1993.
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6
Published: c2008.
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7
Published: 2009.
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8
Published: 1975.
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9
Published: 1975.
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10
Published: 1975.
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11
Published: 1968.
Superior document: National Academy of Sciences. Publication
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12
Published: 2009.
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13
Published: 1996.
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14
Published: c2001.
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15
Published: 1995.
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16
Published: c2005.
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17
Published: c2008.
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18
Published: c2006.
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19
Published: c2009.
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20
Published: 1970.
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