@article {48469,
	title = {Calculating critical loads of acid deposition for forest soils in Alberta (CLAB) : final report : critical load, exceedance and limitations},
	year = {2008},
	pages = {19},
	institution = {Trent University, Environmental and Resource Studies},
	url = {http://www.ccme.ca/files/Resources/air/acid_rain/pn_1408_clab.pdf},
	author = {Aherne, Julian}
}
