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1Published 1977“...GN 357 .C744...”
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2Published 1979“...GN 302 .N532...”
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3Published 1978“...GN 452.5 .F726...”
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4Published 1976“...GN 625 .C456...”
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5Published 1990“...GN 346 .F459 1990...”
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6Published 1993“...GN 662 .C714 1993...”
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7Published 1975“...GN 386 .I61 1975...”
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8Published 2001“...GN 871 .T323 vol. 17...”
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9Published 1970“...GN 875 .O3 .W476...”
Conference Proceeding Book