Fort R, López de Azcona MC, Mingarro F. Cleaning of stone materials in the Cathedral de Valladolid (Spain). Mater. constr. [Internet]. 2000Jun.30 [cited 2024Apr.20];50(258):37-50. Available from: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/408