@mastersthesis {35717,
	title = {A biosystematic revision of Arnica L. subgenus Chamissonis Maguire},
	volume = {Botany},
	year = {1988},
	pages = {425},
	address = {University of Alberta},
	keywords = {Asteraceae},
	url = {http://search.proquest.com/docview/275595775},
	author = {Gruezo, William Salem}
}
