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1Published 1977“...HD 7381 .A3 .D294...”
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2Published 1980“...HT 169 .N52 .W4 .P976...”
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3Published 1981“...HC 625 .E5 .O62...”
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4Published 1979“...HC 625 .E5 .S989...”
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15Published 1979“...HC 625 .E5 .S989 s...”
Conference Proceeding Book -
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18Published 1982“...HN 930.5 .Z9 .C6 .P712...”
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20