. . "Arbres Washington (D.C.)" . . "Forest trees of the District of Columbia, including some foreign trees; how to know them, where to see them" . . . "Forest trees of the District of Columbia, including some foreign trees how to know them, where to see them"@en . . . . . . . . . "Forest trees of the District of Columbia including some foreign trees, how to know them, where to see them"@en . . "Forest trees of the District of Columbia : including some foreign trees, how to know them, where to see them" . .