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Date: 2015-01-03 12:57:25Agriculture Certified arborist Arborist Arboriculture Urban forestry Tree Pennsylvania State University Pennsylvania Pruning Forestry Land management Land use | CELEBRATING 50 years Shade Tree SymposiumAdd to Reading ListSource URL: www.penndelisa.orgDownload Document from Source WebsiteFile Size: 4,41 MBShare Document on Facebook |