Two empires or three?

doi:10.1073/pnas.95.17.9720

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Article

Two empires or three?

Proceedings of the National Academy of Sciences of the United States of America - 18 Aug 1998

Mayr E

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PMID: 9707542
DOI: 10.1073/pnas.95.17.9720
PMCID: PMC33883

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