Fig. 1From: Development of a novel conservation treatment of stone monuments with bioactive nanocompositesSEM-EDS analyses of stone samples treated with Estel1000/ZnO-NPs (0.5 % w/w). a Calcare di Altamura; b Calcarenite di Gravina from Massafra; c Calcarenite di Gravina from GravinaBack to article page