@mastersthesis {34133,
	title = {Coal quality, coal rank variation and its relation to reconstructed overburden, Upper Cretaceous and Tertiary plains coals, Alberta, Canada},
	volume = {Geology},
	year = {1984},
	pages = {131},
	address = {University of Alberta},
	url = {http://search.proquest.com/docview/89138423},
	author = {Nurkowski, John R.}
}
