TY  - BOOK
AU  - Das N.C.
TI  - Ferns and fern -allies of Tripura [North-East India]
SN  - ISBN: 81-7089-334-8
U1  - 587.35415 
PY  - 2007///
CY  - Dehradun -248001
PB  - International book distributors 
ER  -