@article {31066,
	title = {Sulphur deposition and acidication in the oil sands area. Part III. In : Soil research related to revegetation of the oil sands area, F. D. Cook, project leader},
	year = {1977},
	note = {Project VE 4},
	pages = {50},
	author = {Takyi, S. K. and Nyborg, M.}
}
