@book{55619,
	author = {Vasishta, P. C. },
	title = {Vascular cyptogams (pteridophyta) /},
	publisher = {S. Chand,},
	year = {1972 [Reprinted 1973]},
	series = {Botany for degree students, },
	address = {India :},
	edition = {2nd rev.ed.}
}