@book{66402,
	author = {Parihar, N. S.},
	title = {Pteridophytes / },
	publisher = {Central Book Depot,},
	year = {c1973.},
	series = {An introduction to embryophyta, },
	address = {Allahabad :},
	edition = {5th ed.},
	url = {An introduction to embryophyta}
}