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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 1967“...[publisher not identified] ;...”
Book -
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8Published 1969“...[publisher not identified] ;...”
Book -
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10
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11
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12Published 1934“...[publisher not identified] ;...”
Conference Proceeding Book -
13
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14
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15by Howard, Robert E. (Robert Ervin), 1906-1936“...[publisher not identified] ;...”
Published 1980
Book -
16
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17
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18
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19Published 1945“...[publisher not identified],...”
Book -
20