Footprints in the ash : the explosive story of Mount St. Helens /Author: Morris, John D.
Publisher: Green Forest, AR : Master Books,
Date: c2003. This title can be found in 2 Iowa libraries.
Preliminary geologic map of the Spirit Lake quadrangle, Washington /Publisher: [Reston, Va.] : The Survey,
Date: [1984] This title can be found in 1 Iowa libraries.
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