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Science 5 March 1993:
Vol. 259. no. 5100, p. 1384
DOI: 10.1126/science.259.5100.1384-a
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Corrections and Clarifications

In the Perspective "Glowing avalanches: New research on volcanic density currents," by Greg A. Valentine and Richard V. Fisher (19 Feb., p. 1130), the photograph credit line should have read, "[Courtesy Richard P. Hoblitt, U.S. Geological Survey]."

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