@mastersthesis {31548,
	title = {Origin of tundra butterflies in Alberta, Canada and their significance in the study of refugia of Wisconsin age},
	volume = {Entomology},
	year = {1978},
	pages = {137},
	address = {University of Alberta},
	keywords = {entomology, insecta, Lepidoptera},
	url = {http://search.proquest.com/docview/302931508},
	author = {Pike, Edward Marshall}
}
