@inproceedings{1055817, title = "Attapulgus clay on cleaning, biological aggression control, desalination of stone", author = "Paleni, A. and Curri, S. B.", year = "1976", pages = "153-162", booktitle = "2ον Διεθνές συμπόσιον επί της καταστροφής των λίθων είς κατασκευάς. 2me Colloque international sur la détérioration des pierres en oeuvre. 2nd International symposium on the deterioration of building stones" }