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1Published 1960“...HC 622 .S6935...”
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2Published 1928“...HD 8930.5 .N277...”
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3Published 1960“...HC 622 .N532 ics...”
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4Published 1988“...HF 1416.6 .N5 .F892...”
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5Published 1955“...HD 2346 .N52 .N4 .F527...”
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6Published 1963“...HC 623 .S471...”
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7Published 1969“...HC 622 .N277 l...”
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8Published 1991“...HC 665 .C945 .P273...”
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9Published 1967“...HC 670 .I55 .S989...”
Conference Proceeding Book