NCPTT | Building

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Mechanical Systems in Historic Buildings (1998-20)

On July 29, 2009 By NCPTT

Building Dry Stone Retaining Walls (2002-06)

On March 2, 2009 By NCPTT

Building Dry Stone Retaining Walls (2002-06)

Soiling Patterns on a Tall Limestone Building: Changes Over Sixty Years (2000-13)

On December 31, 2000 By NCPTT

The Cathedral of Learning, 1930 (From University Archives, University of Pittsburgh)

Influence of Atmospheric Pollutants on Soiling of a Limestone Building Surface (1995-06)

On December 31, 1995 By NCPTT