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1by Smith, A. Ledyard (Augustus Ledyard), 1901-1985“...Carnegie Institution of Washington publication ;...”
Published 1950
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2
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3by Smith, Augustus Ledyard“...Carnegie Institution of Washington publication ;...”
Published 1934
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4by Smith, Robert Eliot, 1899-1983“...Carnegie Institution of Washington publication ;...”
Published 1937
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5by Smith, Augustus Ledyard“...Carnegie Institution of Washington publication ;...”
Published 1937
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6Published 1937“...Carnegie institution of Washington. Publication no. 477...”
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