@article {44106,
	title = {Phosphorus sources and sinks in watersheds : a review},
	year = {2002},
	pages = {86},
	institution = {Agriculture Food and Rural Development, Irrigation Branch and Environmental Practices and Livestock Welfare Branch},
	author = {Riemersma, Sandi and Little, Joanne and Ontkean, Gerald and Moskal-H{\'e}bert, Tanya}
}
