Corrections and Clarifications

Correction

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Science  24 Dec 1982:
Vol. 218, Issue 4579, pp. 1270
DOI: 10.1126/science.218.4579.1270-b

Abstract

The full-color map reproduced on page 987 of the 3 December 1982 issue is a preliminary rendition of the Composite Magnetic Anomaly Map of the United States, not the final version. Only the color schemes differ; the magnetic contours are identical.