TY  - BOOK
AU  - CHOPRA (G L)
TI  - Classbook of Pteridophyta
U1  - 580/37 
PY  - 1955///
CY  - Jullundur
PB  - Hari Singh & Brothers
KW  - Pteridophyta
KW  - of
KW  - Classbook
ER  -