Gray, A., & Sullivant, W. S. (1859). Manual of the botany of the northern United States (Rev. ed., including Virginia, Kentucky, and all east of the Mississippi: arranged according to the natural system. [3d ed.].). Ivison & Phinney.
MLA CitationGray, Asa, and William Starling Sullivant. Manual of the Botany of the Northern United States. Rev. ed., including Virginia, Kentucky, and all east of the Mississippi: arranged according to the natural system. [3d ed.]. Ivison & Phinney, 1859.
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