@article {28985,
	title = {Site factors contributing to the spruce regeneration problem in Alberta{\textquoteright}s mixedwood. In : White spruce : the ecology of a northern resource, proceedings of a symposium held June 21, 1971, Canadian Botanical Association, Edmonton, Alberta, edited by R. G. },
	volume = {Information Report NOR-X-40},
	year = {1972},
	pages = {8-14},
	institution = {Canadian Forestry Service},
	author = {Lees, J. C.}
}
