http://AATesaurus.cultura.gencat.cat/aat/getty_enhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31484926additive color screen films http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31484926 photographic transparencies BT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31484926 Agfacolor films NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31484926 additive color screen film UF