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harvard university ernst mayr library museum of comparative zoology bird pictorial works artist:name=paul louis oudart mollusk la galerie des oiseaux t.2 (1825)anatomy la galerie des oiseaux t.1 (1825)

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A husky tinsmith who works 8 hours a day, much of it out-doors. Compare him with some of our adolescent boys and girls who work in close confinement of the cotton mill 10 hours a day. LOC nclc.02626

historical history

Nuit sereine au clair de lune, Marcel Rieder, circa 1919

marcel rieder academic art

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anatomy diptera

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harvard university ernst mayr library

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united states bird

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