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Pacific Northwest ISA

The mission of the Pacific Northwest Chapter of the International Society of Arboriculture (PNW-ISA) is to foster a greater appreciation of trees and promote the professional practice of arboriculture through education, research, and technology. PNW-ISA is a 501(c)(3) nonprofit organization serving members in Alaska, Idaho, Oregon, Washington and British Columbia.

FEIN: 91-1492542

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