@article {35102,
	title = {Maintenance and fertilization of a revegetated subalpine coal mine spoil. In : 22nd Annual Alberta Soil Science Workshop Proceedings, February 17 \& 26, 1986, Lethbridge, Alberta},
	year = {1986},
	pages = {135-146},
	institution = {University of Alberta, Faculty of Extension},
	author = {Takyi, S. K. and Islam, M. R.}
}
