TY  - BOOK
AU  - Verma, H. K.,
TI  - Textbook of Pteridophyta
SN  - 9789381421277
U1  - 587 
PY  - 2011///
CY  - New Delhi
PB  - Random Publications
KW  - Pteridology
KW  - Pteridophyta
KW  - Vascular seedless plants
ER  -