Corrections and Clarifications


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Science  21 Dec 1990:
Vol. 250, Issue 4988, pp. 1646
DOI: 10.1126/science.1646-b


In the Erratum (7 Dec., p. 1320) about the Editors' response to George Legge's letter of 16 November (p. 889), the error was not corrected. Reference should have been made to a "300-nm beam spot," not a "300-µm beam spot."

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