How to know the lichens /

• Main Author: Hale, Mason E. (συγγραφέας.)
• Format: Book
• Language: English
• Published: Boston : WCB/McGraw-Hill, c1979.
• Edition: 2nd ed.
• Series: The pictured key nature series
• Subjects: Λειχήνες.; Μικροοργανισμοί