Peterson, Roger Tory,1908-1996

A field guide to wildflowers of Northeastern and North-Central North America :a visual approach arranged by color, form, and detail /by Roger Tory Peterson and Margaret McKenny ; illus. by Roger Tory Peterson.
Boston, MA :Houghton Mifflin,1968.

xxviii, 420 p. :ill. (part col.)

1.Wild flowers--Ontario--Identification.2.Wild flowers--United States.Dynamic Details
#58LCCN:67--13042