@book{2642,
	author = {Sporne, K. R.},
	title = {The morphology of pteridophytes :},
	publisher = {Hutchinson,},
	year = {c1975.},
	series = {Hutchinson university library : Biological sciences},
	address = {London :},
	edition = {4th ed.},
	note = {Includes index.}
}