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1
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2
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3
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4
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5Published 1980“...HG 8734 .N5 .N532...”
Book -
6
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7Published 1980“...HD 5715.5 .N5 .M626...”
Book -
8Published 1980“...HD 5715.5 .N5 .M626...”
Book -
9
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10
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11
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12
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13Published 1980“...HC 622 .T2555...”
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14
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15by Poole, W. A. (William Arthur), 1935-“...HC 625 .T4 .P822...”
Published 1980
Conference Proceeding Book -
16
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17Published 1980“...HD 6331.2 .N5 .P963...”
Book -
18
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19Published 1988“...HD 5850 .A6 .T255...”
Book -
20