doug culver

United States

Joined: 09/10/2008

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doug315 uploaded a new presentation "Obsidians Chemical Makeup"

Uploaded: 39 months ago

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doug315 uploaded a new presentation "Obsidian Powerpoint"

Uploaded: 40 months ago

How we use obsidian in America, past and present.

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doug315 uploaded a new presentation "Obsidian Powerpoint"

Uploaded: 40 months ago

A powerpoint about how we use obsidian, who used obsidian in america, and why we used obsidian.

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