TY  - BOOK
AU  - Wherry,Edgar Theodore
TI  - The fern guide: Northeastern and Midland United States and adjacent Canada 
U1  - 587.30973 23
PY  - 1961///
CY  - Garden City ; N.Y.
PB  - Doubleday
KW  - Ferns
KW  - Northeastern States
KW  - Identification
KW  - Middle West
KW  - Canada, Eastern
N1  - includes bibliographical references and indexz
ER  -