progressive proofshttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31431327enGetty Institute2026-03-30 20:56:22http://AATesaurus.cultura.gencat.cat/aat/getty_enTesaurus d'Art i Arquitecturatext/html progs, bastard proofs, progressive proofs, sequential sequential proofs PP bastard progs progressive proof progs