A field guide to trees and shrubs : field marks of all trees, shrubs, and woody vines that grow wild in the north /astern and north-central United States and in south-eastern and south-centralCanada - Petrides, George A. (Boston : Houghton Mifflin, 1972)
Keywords: Trees -- United States -- Identification; Shrubs -- United States -- Identification; Trees -- Canada -- Identification; Shrubs -- Canada -- Identification; Climbing plants -- United States -- Identification; Climbing plants -- Canada -- Identification