@book {156,
	title = {An Illustrated Flora of the Northern United States, Canada And The British Possessions},
	volume = {3},
	year = {1913},
	publisher = {Charles Scribner{\textquoteright}s Sons},
	organization = {Charles Scribner{\textquoteright}s Sons},
	edition = {2},
	author = {Nathaniel Lord Britton and Addison Brown}
}
