@book{40220,
	author = {Preston, C. D. and Croft, Jane M.,},
	title = {Aquatic Plants in Britain and Ireland /},
	publisher = {BRILL,},
	year = {2001.},
	series = {Brill Book Archive Part 1, ISBN: 9789004472495},
	address = {Leiden; },
	url = {http://dx.doi.org/10.1163/9789004473416}
}