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1
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2Published 1979“...QP 121 .E93 r...”
Book -
3Published 1992“...QP 121 .O98...”
Book -
4
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5
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6Published 2000“...QP 106.2 .O98 2000...”
Conference Proceeding Book -
7Published 2005“...QP 121 .O985 2005...”
Book