Corrections and Clarifications

Erratum

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

Abstract

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."