Title: A field guide to the ferns :
Authors: Cobb, Boughton.
Date: 1963
Publisher: Houghton Mifflin,
Physical description: xviii, 281 p. : ill. ; 19 cm.
Language: English
LC classification: Q
Abstract: A guide to identifying North American ferns.
Subject headings (LCSH): Ferns--Canada, Eastern--Identification.; Ferns--Canada, Eastern.; Ferns--North America--Identification.; Ferns--North America.; Ferns--Northeastern States--Identification.; Ferns--Northeastern States.