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1Published 1977“...HC 663 .S471...”
Conference Proceeding Book -
2Published 1987“...HM 511 .S678 1987...”
Book -
3Published 1986“...H 22 .M587...”
Book -
4
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5
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6
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7
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8Published 1999“...HN 3 .A188 1999...”
Book -
9