The fern guide
Subtitle: Northeastern and Midland United States and adjacent Canada
By: Edgar T. Wherry.  Illus. by James C. W. Chen.
Edition: 1st edition.
Publisher: Doubleday
Published: 1961
Place of publication: Garden City, N.Y
Number of pages: 318
Subjects: Ferns -- United States; Pteridophyte
Notes: Bibliography : p. 35.