| http://www.w3.org/ns/prov#value | - The thus laminated polyurethane-pressed polystyrene is then covered on the surface which will ultimately be subjected to the atmosphere 'with a synthetic material such as nylon, polyethylene or polyvinyl chloride plastic and is covered on the surface that is intended to come in contact with the user with an acceptable material 3 such as rayon, cotton, wool or synthetic fiber material.
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