Cover image for A field guide to the ferns... / Boughton Cobb. --
A field guide to the ferns... / Boughton Cobb. --
TITLE:
A field guide to the ferns... / Boughton Cobb. --
Publication Date:
1956
Publication Information:
Houghton,
Physical Description:
281 p. : ill.
Subject Term:
Language:
English