A field guide to the ferns and their related families of northeastern and central North America : with a section on species also found in the British Isles and western Europe /
Field guide to the ferns and their related families Field guide to the ferns
by Boughton Cobb ; illustrated by Laura Louise Foster
- xviii, 281 pages : illustrations ; 20 cm
- Peterson field guide series ; 10 .
Includes bibliographical references (pages 263-267) and index