Jenny Markert Books
Glacier National Park
Describes a backpack trip through Glacier National Park and introduces the area's natural history, biology, and geology.
Read MoreOcean resources
Discusses the world's oceans as a source of food, fresh water, minerals, and energy.
Read MoreGlaciers and icebergs
Describes how glaciers and icebergs form, move, and affect the planet Earth.
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