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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Posted on May 22, 2008 by Mark Ward Sr. and Laura Glass Slope, size, geography and other factors affect choices Read more ??
http://www.w3.org/ns/prov#wasQuotedFrom	constructionmagnet.com