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Science 10 July 1981:
Vol. 213. no. 4504, p. 156
DOI: 10.1126/science.213.4504.156-e
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Erratum

The location given for the distributor of The Sahara and the Nile, reviewed in the issue of 22 May (p. 911), should have been Salem, N.H.

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