@article {30866,
	title = {Gas industry programs for dealing with sulphur and sulphur dioxide and their effects on soils. In : Proceedings of 1977 Annual Alberta Soil Science Workshop on Soil Conservation, Reclamation and Research, February 1 - 2, 1977, Red Deer, Alberta},
	year = {1977},
	note = {Hudson{\textquoteright}s Bay Oil and Gas Company Limited},
	pages = {138-149},
	author = {Duffy, John J.}
}
