TY  - BOOK
AU  - Sharma,O P.
TI  - Pteridophyta / 
SN  - 9781403930309
U1  - 587 
PY  - 2006///
CY  - New Delhi : 
PB  - Macmillan India , 
KW  - PTERIDOPHYTA
N1  - Includes index
ER  -