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Science 13 June 1986:
Vol. 232. no. 4756, p. 1320
DOI: 10.1126/science.232.4756.1320-b
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Erratum

The fifth sentence in M. Granger Morgan's editorial "Risk research: When should we say "enough"? (23 May, p. 917) should have read, "But suppose that after significant effort a risk is not demonstrated."

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Science. ISSN 0036-8075 (print), 1095-9203 (online)