@inproceedings{1055990, title = "Effects of atmospheric pollutants on the composition of black crusts deposited on venetian marbles and stones", author = "Fassina, Vasco and Lazzarini, Lorenzo and Biscontin, G.", year = "1976", pages = "201-211", 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" }