Courtenay, Booth. Wildflowers and weeds [electronic resource] / [by] Booth Courtenay [and] James Hall Zimmerman.. — New York, : Van Nostrand Reinhold, [1972]. — xl, 144 p. : col. illus. 21 cm.
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Wild flowers--Great Lakes Region (North America)--Identification. Weeds--Great Lakes Region (North America)--Identification. Wild flowers--Great Lakes Region (North America)--Pictorial works. Weeds--Great Lakes Region (North America)--Pictorial works.