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TREE BASICS page by page.
Connect with NATURE through TREE BIOLOGY. Start with basics. TREE BASICS is an approved book for 6th grade level children. It is what everyone needs to know about trees. Written by DR ALEX L. SHIGO the FATHER OF MODERN ARBORICULTURE. His literature and learning material can be found here: www.shigoandtrees.com
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Di John Keslick
John Keslick
I am a US Reg Army Veteran. Studied NEW TREE BIOLOGY for 1991 to 2005. Live in Philadelphia Area. Happy Married since 2003.