http://AATesaurus.cultura.gencat.cat/aat/getty_enhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31478582one-centered arches http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31478582 arches by form: number of centers BT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31478582 arches, one-centered UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31478582 arches, single-center UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31478582 one-centered arch UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31478582 single-center arches UF