Als der Drogenboss einer Hanffarm erschossen wird, beschließen seine Mitarbeiter Jack, Harlan und...

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This updated field guide, organized by area, features full-color photographs and information to h...

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Agates - few other natural formations exhibit the tremendous variety seen in these curiously band...

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This guide contains everything you need to know about Lake Superior's agates.

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Focusing on agates of Michigan, Minnesota, Wisconsin, and southern Ontario, this field guide feat...