http://AATesaurus.cultura.gencat.cat/aat/getty_enhttp://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31307334equipment by mode of operation http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31307334 equipment BT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31307334 hydraulic equipment NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31307334 hand tools NT http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31307334 power tools NT