http://AATesaurus.cultura.gencat.cat/aat/getty_enhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31484868barrier-grid prints http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31484868 photographs by processing or presentation technique BT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31484868 barrier-grid print UF