Dr. Alex Shigo and a tree in Bent Street.Dr. Alex Shigo, recognized... News Photo - Getty Images
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New Tree Biology: with Dictionary 2nd (second) Edition by Shigo, Alex L. published by Shigo and Trees Associates (1986): Alex L. Shigo: Amazon.com: Books
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Celebrating Dr. Alex Shigo - Tree Care Industry Magazine
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Dr. Alex Shigo - A Tribute — Race Mountain Tree Services, Inc. - Sheffield, MA - Professional Tree Care in The Berkshires, MA, CT, NY
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Local man revolutionized tree care: Shigo's influence on arboriculture felt worldwide
A New Tree Biology
Alex Shigo pioneered tree-friendly pruning
Touch Trees" - Intelligent Tree Care
Pruning Trees: The Three Step Pruning Method - Iron Tree - Tree Knowledge Base
Alex Shigo - Wikipedia
Alex Shigo - Trivia, Family, Bio | Famous Birthdays
New Hampshire Arborists Memoriam | NH Arborists Association
Shigo Alex L., Dr. | www.worksafety.cz
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:max_bytes(150000):strip_icc()/prune1-56af5a3b3df78cf772c36006-5c61edfd46e0fb000184a2ab.jpg "Dr. Alex Shigo Biography - Arboriculture")