@article{gledocs_11858_6815, author = {Siegesmund, Siegfried and Ruedrich, Joerg}, title = {Monuments under threat: environmental impact, preservation strategies and natural stone recourses}, year = {2011}, volume = {63}, number = {7/8}, pages = {1413-1414}, publisher = {Springer-Verlag}, publisher = {Berlin/Heidelberg}, note = { \url {http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/6815}}, }