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1
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2Published 1993“…Research and Education Association…”
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3Published 1988“…Research and Education Association…”
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4Published 1990“…Research and Education Association…”
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5Published 1988“…Research and Education Association…”
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6Published 1992“…Research and Education Association…”
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7
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8Published 1980“…Research and Education Association…”
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9
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10
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11Published 1986“…Research and Education Association…”
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12
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13
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14
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15
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16
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17
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18
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19Published 1984“…Research and Education Association…”
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20Published 1992“…Research and Education Association…”
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