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1
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2Published 1981“...The Survey,...”
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3Published 1981“...The Survey,...”
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4Published 1981“...The Survey,...”
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5
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6
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7
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8Published 1982“...The Survey,...”
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9
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10Published 1982“...The Survey :...”
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11Published 1983“...The Survey,...”
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12
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13
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14
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15
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16Published 1985“...The Survey ;...”
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17Published 1985“...The Survey ;...”
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18
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19Published 1985“...The Survey ;...”
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20Published 1988“...The Survey ;...”
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