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1Published 1981“...HC 622 .N532 cl...”
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2Published 1992“...HC 683.5 .P2183...”
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3
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4
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5Published 1992“...HC 668 .G5 .A848...”
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6
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7
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8
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9Published 1992“...HC 686 .T6652...”
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10
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11
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12Published 1994“...HD 9738 .N52 .N532...”
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13
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14
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15
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16Published 1991“...HC 665 .C945 .P273...”
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17
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18
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19
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20