00302nam a2200109Ia 4500008004100000082001900041245004500060260003000105650002600135700001700161700001400178220204s9999    xx            000 0 und d  a678.664bFRI.1 0aInternational progress in urethanes. V 1  aWestportbTechnomicc1977  aPolyurethane industry  aFrisch,  K C  aHernandez