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"We all walk on it every day, but don't often think of it. It's underfoot, and, for many of us, out of mind. But just because you trod on it doesn't mean you shouldn't pay close attention to the materials that make"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/green-materials-guide-an-intro-to-green-flooring.html>