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Atlanta, GA: International Society of Arboriculture, [2023]
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Upper Saddle River, N.J: Prentice Hall, 2004
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International Society of Arboriculture, 2010
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International Society of Arboriculture, 1998
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International Society of Arboriculture, 1991
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International Society of Arboriculture, 1990
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International Society of Arboriculture, 1997
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International Society of Arboriculture, 1999