Corrections and Clarifications


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Science  20 Feb 1981:
Vol. 211, Issue 4484, pp. 774
DOI: 10.1126/science.211.4484.774-c


In the article by C. E. Land (12 Sept. 1980, p. 1197), the labels for the curves P(negative estimate) and Power in the left-hand panel of Fig. 1 (p. 1199) should be reversed; the data sources for table 1 (p. 1200) should have been given as (19, 25).