National geographic

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  Año 1981, Vol. 159, Número 1

  • St. Helens: mountain with a death wish

    Rowe Findley

    págs. 3-33

    

  • Mount St. Helens II: in the path of destruction

    Rowe Findley

    págs. 35-49

    

  • Mount St. Helens III: the day the sky fell

    Rowe Findley

    págs. 50-65

    

  • Dwarfing the St. Helens eruption: ancient ashfall creates a Pompeii of prehistoric animals

    Michael R. Voorhies

    págs. 66-74

    

  • They're redesigning the airplane

    Michael E. Long

    págs. 76-103

    

  • Poland's mountain people

    Yva Momatiuk, John Eastcott

    págs. 104-129

    

  • The indomitable cockroach

    Allen A. Boraiko

    págs. 130-142