@article {43542,
	title = {The Alberta GPI accounts : parks and wilderness},
	volume = {Report $\#$ 21},
	year = {2001},
	institution = {Pembina Institute},
	address = {Drayton Valley, AB},
	url = {http://pubs.pembina.org/reports/21_parks_and_wilderness.pdf},
	author = {Griffiths, Mary and Wilson, Sara and Anielski, Mark}
}
