TY  - BOOK
AU  - Cobb,Boughton
TI  - 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
T2  - The Peterson field guide series, 10
AV  - QK525 .C75
U1  - 587.3 
PY  - 1956///
CY  - Boston
PB  - Houghton Mifflin
KW  - Ferns
KW  - North America
KW  - Identification
N1  - Bibliography: p. [263]-267
ER  -