@article {34248,
	title = {Lichen biomonitoring networks in Alberta},
	volume = {4},
	year = {1984},
	pages = {303-313},
	publisher = {Environmental Monitoring and Assessment},
	url = {http://www.springerlink.com/content/v37773r27wj3182h/fulltext.pdf},
	author = {Case, J. W.}
}
