Polyvinyl alcohol English English Polyvinyl Alchool (PVA) polyvinyl alcohol English polyvinyl alcohol English English en:Polyvinyl alcohol polyvinyl alcohol English Polyvinyl alcohol en:Polyvinyl alcohol a water-soluble biodegradable polymer polyvinyl alcohol PVA: Alcohol Polivinílico polyvinyl alcohol Polyvinyl Alcohol en:Polyvinyl alcohol polyvinyl alcohol English PVA PVA, or polyvinyl alcohol http://en.wikipedia.org/wiki/Polyvinyl_alcohol English English English English polyvinyl alcohol English polyvinyl alcohol English English polyvinyl alcohol(PVA) http://en.wikipedia.org/wiki/Polyvinyl_alcohol polyvinyl alcohol en:Polyvinyl alcohol polyvinyl alcohol polyvinyl alcohol PVA polyvinyl alcohol English polyvinyl alcohol polyvinyl alcohol PVA Polyvinyl alcohol English Polyvinyl Alcohol English English English Polyvinyl alcohol English http://en.wikipedia.org/wiki/Polyvinyl_alcohol English PVA: Alcohol Polivinílico polyvinyl alcohol English