Bacteria for stone conservation

Can anyone help me to find documentation about the use of bacteria for
stone Restoration? Thanks.

S.L. Domenico Luis
Sociedad Europea De Restauraciones Petreas.
Edificio Toledo II, Heroes de Toledo S/N
41006 Sevilla Spain
+5 492 24 24
Fax: +5 492 24 24

                                  ***
                  Conservation DistList Instance 8:58
                Distributed: Thursday, January 26, 1995
                        Message Id: cdl-8-58-007
                                  ***