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ARTICLE PDF AUTHOR INFORMATION CONSORTIA A CORRESPONDENT RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE A Correspondent. Reefs: Old and Modern. _Nature_
233, 234 (1971). https://doi.org/10.1038/233234a0 Download citation * Issue Date: 24 September 1971 * DOI: https://doi.org/10.1038/233234a0 SHARE THIS ARTICLE Anyone you share the following
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