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1st
National Symposium 1976, Mississippi State University, USA |
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2nd
Symposium 1979, Ann Arbor Michigan, USA |
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3rd
International Symposium 1982, San Diego, California, USA |
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4th
Symposium 1987, Indianapolis, Indiana, USA |
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5th
International Symposium 1993, Montreal, Québec, Canada |
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6th
International Symposium 1997, New Orleans, Louisiana, USA |
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7th
International Symposium 2000, Calgary, Alberta, Canada |
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8th
International Symposium September 12-16, 2004, Saratoga Springs, New York, USA |
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9th International Symposium September 27-30, 2009, Portland, Oregon, USA |
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