TY  - BOOK
AU  - Sharma,O.P.
TI  - Pteridophyta
T2  - Series on diversity of microbes and cryptogams
SN  - 9781259003349
U1  - 587 
PY  - 2012///
CY  - New Delhi
PB  - Tata McGraw-Hill
N1  - Includes bibliographical references and index
ER  -