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International Society of Arboriculture
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Shasta-Trinity National Forests
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Nova Vita Accident Control Training
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California Department of Forestry and Fire
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Fire Safe Council of Siskiyou County and Mt. Shasta Area Fire Safe Council
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Klamath National Forest
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California Fire Safe Council
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University of California Agriculture & Natural Resources
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California State Contractors License Board
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Natural Resources Conservation Service
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Bureau of Land Management
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National Arbor Day Foundation
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