Pteridophyte flora of the upper gangetic plain
Chowdhury, N P
Pteridophyte flora of the upper gangetic plain - New Delhi: Navyug Traders, 1973 - xvi, 90p.
582.35(540) / L3
Pteridophyte flora of the upper gangetic plain - New Delhi: Navyug Traders, 1973 - xvi, 90p.
582.35(540) / L3