Keywords: Ural pictograms - comparison.png Ural pictograms orange compared to structural formulas of polyethylene polyvinylchloride atactic polystyrene anthracene phenanthrene fluorocyclene chrysene graphite and gramicidin S Based upon hypothesis of V Avinsky published in Khimiya i Zhizn 9 1974 p 82 own Brandmeister 2010-12-26 Ural characters Chemical structures |