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I remember, as a young architect, people always talked about I. M. Pei's concrete. He had a particular specification no one else knew.

"Interview with Architect Annabelle Selldorf". Interview with Philip Nobel, www.architecturaldigest.com. March 31, 2013.
I remember, as a young architect, people always talked about I. M. Pei's concrete. He had a particular specification no one else knew.