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      Scientific American February 15, 1890

      On the Spectrum of &zgr; Ursæ Majoris

      • By Edward C. Pickering on February 15, 1890

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      More in the February 15, 1890 issue of Scientific American
      • Abscess of the Antrum
      • Delagoa Bay
      • How the Cetacea Nurse their Young
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