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1
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2
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3Published 1979“...GC 1561 .N532...”
Book -
4Published 1981“...GC 10.4 .R4 .R3892...”
Book -
5
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6Published 1978“...GC 431 .E56...”
Book -
7
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8
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9
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10Published 1978“...GC 190.2 .N0279...”
Conference Proceeding Book -
11
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12
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13
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14
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15Published 1974“...GC 206 .I61...”
Conference Proceeding Book -
16
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17Published 1975“...GC 100 .D131...”
Conference Proceeding Book -
18
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19
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20