TY  - BOOK
AU  - ROY (S K)
TI  - Bryophyta pteridophyta and gymnosperms
U1  - 580/235 
PY  - 1965///
CY  - Meerut
PB  - Rastogi & Company
KW  - pteridophyta
KW  - gymnosperms
KW  - Bryophyta
KW  - and
ER  -