How to know the ferns and fern allies /

• Main Author: Michel, John T. (συγγραφέας.)
• Other Authors: Paulton, Edgar M. (εικονογράφος.)
• Format: Book
• Language: English
• Published: Boston : WCB/McGraw-Hill, 1979.
• Series: The pictured key nature series
• Subjects: Φυτά > Μορφολογία