An introduction to plant taxonomy /
Lawrence, George Hill Mathewson. 1910-
An introduction to plant taxonomy / George Hill Mathewson Lawrence ; Illus. by Marion Ruff Sheehan. - New York : Macmillan Co., c1955 [Reprint 1968] - 179 p. : ill. ; 22 cm.
Includes indexes.
Plants--Classification.
Plants--North America
580.12 / LAI 1968
An introduction to plant taxonomy / George Hill Mathewson Lawrence ; Illus. by Marion Ruff Sheehan. - New York : Macmillan Co., c1955 [Reprint 1968] - 179 p. : ill. ; 22 cm.
Includes indexes.
Plants--Classification.
Plants--North America
580.12 / LAI 1968