Riga 71:
Riga 71:
* http://www.getty.edu/conservation/publications_resources/pdf_publications/ethers.pdf Sulla degradazione della celluloide
* http://www.getty.edu/conservation/publications_resources/pdf_publications/ethers.pdf Sulla degradazione della celluloide
* http://www.bouncing-balls.com/chemistry_tech_conservation/ageing.htm Sulla degradazione della gomma vulcanizzata
* http://www.bouncing-balls.com/chemistry_tech_conservation/ageing.htm Sulla degradazione della gomma vulcanizzata
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* http://pickcollecting.presspublisher.us/issue/summer-2012/article/pick-degradation Sulla degradazione della celluloide
[[Category:Tecnica]]
[[Category:Tecnica]]