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Professional Affiliations International Society of Arboriculture ~ I.S.A. www.isa-arbor.com WESTERN CHAPTER INTERNATIONAL SOCIETY OF ARBORICULTURE ~ WC-I.S.A. www.wcisa.net TREE CARE INDUSTRY ASSOCIATION ~ T.C.I.A. http://128.241.193.252 CALIFORNIA ARBORIST ASSOCIATION ~ C.A.A. www.cal-arb-association.com American Society of Consulting Arborists ~A.S.C.A. www.asca-consultants.org CALIFORNIA URBAN FORESTS COUNCIL ~ C.U.F.C. www.caufc.org SOCIETY OF COMMERCIAL ARBORICULTURE ~ S.C.A. http://sca.isa-arbor.com California Native Plant Society ~ C.N.P.S. www.cnps.org BIO-INTEGRAL RESOURCE CENTER ~ B.I.R.C. www.birc.org National Arbor Day Foundation ~ N.A.D.F. www.arborday.org Better Business Bureau ~ B.B.B. www.bbb.org