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George A. Petrides

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Stand Alone

Trees and shrubs
Trees of the Rocky Mountains and intermountain west
Trees Of The American Southwest (Trees of the Us)
Trees Of The Rocky Mountains & Intermountain West (Trees of the Us)
A field guide to eastern trees
Trees of the California Sierra Nevada
Trees of the Pacific Northwest
A field guide to trees and shrubs
A Field Guide to Western Trees Western United States and Canada
Peterson First Guide to Trees
field guide to trees and shrubs: field marks of all trees, shrubs, and woody vines that grow wild in the northeastern and north-central United States and in southeastern and south-central Canada
Trees of the Pacific Northwest: Including Oregon, Washington, Idaho, Nw. Montana, British Columbia, Yukon, & Alaska (Backpacker Field Guide Series)
A Field Guide to Eastern Trees Eastern United States and Canada, Including the Midwest