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<http://webisa.webdatacommons.org/455614771>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<paintsquare.com> .
<http://webisa.webdatacommons.org/455614771>	<http://www.w3.org/ns/prov#value>	"However, estimating the percentage of corrosion can be challenging, so there is a standard that provides uniform means to determine amount and distribution of corrosion on the surface." .
<http://webisa.webdatacommons.org/prov/51536211>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/455614771> .