http://AATesaurus.cultura.gencat.cat/aat/getty_enhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786tube structures http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 rigid frames BT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 construction, tube-in-tube UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 structures, tube UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 structures, tube in tube UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 structures, tube-in-tube UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 tube in tube construction UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 tube in tube structures UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 tube structure UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 tube-in-tube construction UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31458786 tube-in-tube structures UF