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Analytical Chemistry (ISSN 0003-2700) is published semimonthly by the American Chemical Society, 1155 16th St., N.W., Washington, DC 20036. Periodicals postage paid at Washington, C H E M DC, and additional mailing offices. Postmaster: Send address changes to Analytical Chemistry, Member & Subscriber Services, P.O. Box 3337, Columbus, OH 43210.

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News & Features, Aprll 1, 1999