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11
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12Published 1992“...HC 435.2 .D489...”
Book -
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14
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15
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16
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17Published 1999“...HC 79 .S3 .E19...”
Book -
18
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19Published 1995“...HD 75 .G88405...”
Conference Proceeding Book -
20Published 1988“...HD 75 .H632...”
Book