TY  - GEN
AU  - Vasishta, P. C. 
TI  - Botany: pteridophyta 
SN  - 8121908280
U1  - 587 
PY  - 1971///
CY  - New Delhi
PB  - S. Chand & Company Ltd
KW  - Pteriodophyta
KW  - Plants
ER  -