00889cam a2200217 4500 547803388 TxAuBib 19990602120000.0 990602s1968||||||||||||||||||||||||eng|u 67013042 TxAuBib Peterson, Roger Tory, 1908- 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 : Houghton Mifflin, 1968. xxviii, 420 p : illus. (part col.) ; 20 cm. Peterson field guide series, 17, The 19990602. Wild flowers United States Pictorial works. McKenny, Margaret, joint author. The Peterson field guide series, 17.