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1
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2
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3
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4Published 1981“...HC 255 .W567...”
Book -
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6
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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 1988“...HD 82 .P7692...”
Book -
12
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13Published 1986“...HC 59.7 .T3962...”
Book -
14
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15
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16
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17Published 1994“...HN 980 .W0111...”
Conference Proceeding Book -
18
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19Published 1993“...HD 82 .R684...”
Book -
20