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1Published 1978“...HG 229 .S775...”
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2
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3
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4
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5
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6
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7Published 1987“...HD 73 .C783...”
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8
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9
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10Published 1993“...HC 685.5 .W843...”
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11
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12
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13
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14
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15Published 1940“...HC 622 .N532 car...”
Conference Proceeding Book -
16Published 1991“...HG 3881.5 .W57 .R436...”
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17
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18
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19Published 1986“...HG 3877 .E19...”
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20Published 1989“...HC 227 .P4715...”
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