Copper lightning protection systems save lives, billions; Building and Architectural News, #80, Winter 1995; "Archived copy". Archived from the original on 2013-03-15. பார்க்கப்பட்ட நாள் 2012-09-11.{{cite web}}: CS1 maint: archived copy as title (link)
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Copper lightning protection systems save lives, billions; Building and Architectural News, #80, Winter 1995; "Archived copy". Archived from the original on 2013-03-15. பார்க்கப்பட்ட நாள் 2012-09-11.{{cite web}}: CS1 maint: archived copy as title (link)
