The effect of selected cleaning techniques on Berkshire Lee marble : a scientific study at Philadelphia City Hall / by V.G. Mossotti [and six others].
- Physical Description: 1 online resource (vii, 159 pages) : maps, tables.
- Publisher: Menlo Park, California : U.S. Department of the Interior, U.S. Geological Survey, 2002.
|General Note:|| Title from title screen (viewed October 21, 2014).
Also available online in PDF format from the U.S. Geological Survey Warehouse (http:/pubs.er.usgs.gov/).
|Bibliography, etc. Note:|| Includes bibliographical references.
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|Subject:||Building stones > Cleaning.
Marble > Cleaning.
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