73242642
Dec 12, 1979
Jul 2, 1985
Chemical Cellulosics for Use in Industry; Organic Chemicals for Use in Industry; Plastics for Use in Industry; Polyvinylidene Chloride for Use in the Manufacture of Films Used in Industry; Chemicals for the Production of Propellants; Chemicals for the Production of Membranes; and Chemicals for the Manufacture of Medical Products
Chemicals