Cobb, Boughton.

A field guide to 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 /Boughton Cobb ; illustrated by Laura Louise Foster ; sponsored by the National Audubon Society, the National Wildlife Federation, and the Roger Tory Peterson Institute.
Boston :Houghton Mifflin,1984.

xviii, 281 p. :ill.

Shortened form of title: Field guide to the ferns.

Shortened form of title: Ferns.

Includes bibliographical references and index.

1.Ferns--North America--Identification.Dynamic Details
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