International Society of Arboriculture.
non-profit botanical organization
22-Nation Tree Climbing Championship Marks 50th Year
Nearly 100 arborists from 22 countries marked the 50th International Tree Climbing Championship in St. Louis Tower Grove Park, returning to the city of the 1976 original.
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About International Society of Arboriculture
The International Society of Arboriculture, commonly known as ISA, is an international non-profit organization headquartered in Atlanta, Georgia, United States. The ISA serves the tree care industry as a paid membership association and a credentialing organization that promotes the professional practice of arboriculture. ISA focuses on providing research, technology, and education opportunities for tree care professionals to develop their arboricultural expertise. ISA also works to educate the general public about the benefits of trees and the need for proper tree care.
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