http://AATesaurus.cultura.gencat.cat/aat/getty_en Tesaurus d'Art i Arquitectura Getty Institute Getty Institute 0000-00-00 en 2026-03-30 20:34:09 adjustable-pitch propellers 2026-03-30 20:34:09 adjustable-pitch propeller http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31348918 variable pitch propellers http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31348918http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31322980