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      Digital & 4-Year Archive

      Scientific American October 06, 1877

      Aztec Ruins of Southwestern Colorado

      On the Rivers La Plata and San Juan

      • October 6, 1877

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      More in the October 06, 1877 issue of Scientific American
      • A Nevada Sand Storm
      • Deep Sea Mollusca
      • Extirpation of Superior Maxillary Nerve and Meckel's Ganglion for Facial Neuralgia
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