Sigma-Aldrich Corporation To Present At The NASDAQ 17th Investor Program On Wednesday, June 21, 2006

ST. LOUIS, June 12 /PRNewswire-FirstCall/ -- Sigma-Aldrich Corporation (Nasdaq: SIAL - News) will be presenting at the NASDAQ 17th Investor Program on Wednesday, June 21st at 11:45 AM GMT in London.

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