Gray, Asa, 1810-1888. Gray's new manual of botany : a handbook of the flowering plants and ferns of central and northeastern United States and adjacent Canada / Rev Benjamin Lincoln Robinson and Merritt Lyndon Fernald - Seventh edition - 926p. : illustrations ; 22cm. TL-2:2124 Subjects--Topical Terms: Botany--United States. Dewey Class. No.: 581.973