http://AATesaurus.cultura.gencat.cat/aat/getty_enhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381053military security buildings http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381053 military buildings BT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381053 bunkers NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381053 blockhouses NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381053 military towers NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381053 sentry boxes NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381053 guardhouses NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381053 buildings, military security UF http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31381053 military security building UF