@article {36156,
	title = {The past in perspective : the northern mixedwood forest in Alberta. In : Proceedings of management and utilization of northern mixedwoods, Symposium held April 11-14, 1988 in Edmonton, Alberta, J. K. Samoil, editor},
	year = {1988},
	pages = {23-27},
	author = {Clark, J. D.}
}
