TY  - BOOK
AU  - Tryon, Rolla M..
TI  - Ferns and Allied Plants with Special Reference to Tropical America / 
SN  - 0-387-90672-X
U1  - I42.7 
PY  - 1982///
CY  - New York : 
PB  - Springer-Verlag , 
KW  - Botany <Ferns>
ER  -