TY  - BOOK
AU  - Ckarke, Charles Baron
TI  - Review of the ferns of Northern India: with an index of the species, and 36 plates
T2  - Transactions of the linnean society- 2 series, botany
U1  - R 
PY  - 1973///
CY  - Dehradun
PB  - Bishen Singh Mahendra Pal Singh
ER  -