@article {33604,
	title = {Testing for vegetation gradients in the Athabasca oil sands area. In: H. S. Sandhu, J. R. Clements and B. L. Magill (eds). Symposium Workshop Proceedings : acid forming emissions in Alberta and their ecological effects},
	year = {1982},
	pages = {435-448},
	institution = {Alberta Department of the Environment, Canadian Petroleum Association and Oil Sands Environmental Study Group},
	address = {Edmonton, AB},
	author = {Pielou, E. C.}
}
