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Title: What was essential to the development of the modern skyscraper? Post by: SkorpionX on Nov 14, 2017 What was essential to the development of the modern skyscraper?
A. electric elevator B. pre-cut glass panes C. truss-and-balloon framing D. cable car Title: Re: What was essential to the development of the modern skyscraper? Post by: lntit on Nov 14, 2017 A
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