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Ref: 6487
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Ref: 6587, dated 3/7/2010
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Ref: 6654 dated 10/29/2010, registered/paid at SNS2010
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Ref: 6781, Onsite registration at SNS2011
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Ref: 6801
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Ref: 6988
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Ref: 7044
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Ref: 1679, Early Bird #61
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Ref: 1879, pre-Chicago rate
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