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1Published 1972“...Department of Statistics publication...”
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2
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3
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4
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5Published 1967“...Department of Statistics publication...”
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6Published 1968“...Department of Statistics publication...”
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7
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8
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9
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10
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11Published 1964“...Department of Statistics publication...”
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12Published 1968“...Department of Statistics publication...”
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13Published 1977“...Department of Statistics publication...”
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14
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15
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16Published 1969“...Department of Statistics publication...”
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17
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18
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19
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20Published 1964“...Department of Statistics publication...”
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