The a scientific study at Philadelphia City Hall Mossotti, V. G. U.S. Geological Survey Library text theses vau Reston, Va.] U.S. Dept of the Interior, U.S. Geological Survey 2002 monographic eng

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1 CD-ROM 4 3/4 in. A scientific investigation of the effects of eight different cleaning techniques on the Berkshire Lee marble component of the facade of the East Center Pavilion at Philadelphia City Hall. The eight cleaning techniques evaluated were power wash, misting, gommage, combination, Armax, JOS, laser, and dry ice. specialized by V.G. Mossotti ... [et al.]. Title from disc label. Shipping list no.: 2003-0003-E. System requirements for Macintosh: Macintosh PowerPC processor; MAC OS software version 8.6, 9.0.4, 9.1, 9.2, or OS X (Some features of Acrobat 5.0 may not be available for OS 8.6 and OS X); 64MB RAM. System requirements for Windows: Intel Pentium or equivalent processor; Microsoft Windows 95 OSR 2.0, Windows 98 SE, Windows Millennium, Windows NT 4.0 with Service Pack 5, or Windows 2000 or Windows XP; 64MB of RAM; Adobe Acrobat Reader (included on disc); CD-ROM drive. Building stones Cleaning Marble Cleaning I 19.16:1635/CD I 19.16:1635/CD GPO 030128 20160527194017.0 269309