Corrections and Clarifications

Erratum

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Science  18 Nov 1983:
Vol. 222, Issue 4625, pp. 715
DOI: 10.1126/science.222.4625.715-a

Abstract

In the letter by Peter S. Ashton et al. (28 Oct., p. 366), reference 2 was incorrect. It should have read, "E. Marshall, Science 221, 242 (1983)."

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