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ES1979241563U1979-02-211979-02-21Un paquete de laminas de peliculas para rayos x, para usarseen un sistema de manipulacion a la luz natural.
ExpiredES241563Y
(es)
Un procedimiento para preparar una composicion formadora de pelicula que contiene un polimero de poliisocianato y un polimero de polivinil pirrolidona.