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"Wood is a pretty amazing material -- it's strong, malleable, and it literally grows on (or should I say, in) trees. Depending on the type of tree from which it"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/money/green-workplace/photos/9-of-the-craziest-things-made-of-wood/combination-lock>