Footprints in the ash the explosive story of Mount St. Helens

Xehetasun bibliografikoak
Egile nagusia:	Morris, John D.
Beste egile batzuk:	Austin, Steven A.
Formatua:	Liburua
Hizkuntza:	English
Argitaratua:	Green Forest, AR Master Books c2003.
Gaiak:	Volcanic ash, tuff, etc. > Washington (State) > Saint Helens, Mount. Geology, Stratigraphic. Geology > Washington (State) > Saint Helens, Mount. Geology > Washington (State) > Spirit Lake. Saint Helens, Mount (Wash.) > Eruption, 1980.