Text ( visual ) : unmediated Peterson first guide to wildflowers of Northeastern and North-central North America / Roger Tory Peterson. -- Boston : Houghton Mifflin , c1986. -- 126 p. : ill. (some col.) ; 19 cm. -- Includes index. -- ISBN 039540777X ; (BB01474351) ; https://ci.nii.ac.jp/ncid/BB01474351 Other Title(s): Peterson first guide to wildflowers ; Wildflowers : Peterson first guides. -- Author Heading(s): Peterson, Roger Tory. -- Classification(s): LCC : QK118 ; DC19 : 582.13/0974. -- Subject Heading(s): LCSH : Wild flowers -- Northeastern States -- Identification ; LCSH : Wild flowers -- Middle West -- Identification

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