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harvard university ernst mayr library museum of comparative zoology mollusk the birds of great britain, vol. 7 (1800)fossil great britain illustrations of the conchology of great britain and ireland shell the birds of great britain, vol. 5 (1797)

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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harvard university ernst mayr library

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gastropoda mollusk

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great britain mollusk

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harvard university paleontology

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harvard university fish

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dictionary shell

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dictionary shell

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harvard university fossil

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harvard university ernst mayr library

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