1
by White, Ellen G.
Published 2014
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2
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3
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4
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5
Published 1970
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6
by Goldstein, Clifford
Published 1995
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7
by Johnsson, William G.
Published 2004
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8
by Knight, George R.
Published 2004
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9
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10
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11
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12
by Knight, George R.
Published 1989
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13
by Davis, Thomas A.
Published 1980
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14
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15
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16
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17
by White, Ellen G.
Published 2007
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19
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20
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