TY  - BOOK
AU  - Biswas, Chhaya
AU  - Johri, B M
TI  - The gymnosperms 
SN  - 81-7319-080-1
U1  - 585  
PY  - 1997///.
CY  - New Delhi: 
PB  -  Narosa Publishing House; 
ER  -