Johri R.M, Tyaagi & Sneh Lata. (2004). A textbook of Pteridophyta. : Dominant Fublishort and Distributore.
Johri R.M, Tyaagi and Sneh Lata. 2004. A textbook of Pteridophyta. : Dominant Fublishort and Distributore.
Johri R.M, Tyaagi and Sneh Lata. (2004). A textbook of Pteridophyta. : Dominant Fublishort and Distributore.
Johri R.M, Tyaagi and Sneh Lata. A textbook of Pteridophyta. : Dominant Fublishort and Distributore. 2004.
