@mastersthesis {31786,
	title = {A revision of the genera Dicranum and Orthodicranum (Musci) in North America north of Mexico},
	volume = {Botany},
	year = {1979},
	pages = {453},
	address = {University of Alberta},
	keywords = {moss},
	url = {http://search.proquest.com/docview/302980764},
	author = {Peterson, Wilbur}
}
