@article {32041,
	title = {Interim levels on symptomology and threshold levels of air pollutant injury to vegetation, 1978-79},
	volume = {AOSERP Open File Report O. F. 1},
	year = {1979},
	note = {Project LS 3.1},
	pages = {17},
	institution = {Northern Forest Research Centre, Alberta Oil Sands Environmental Research Program},
	address = {Edmonton, AB},
	url = {https://era.library.ualberta.ca/files/zc77sr458/LS\%203.1\%20Sept\%201979.pdf},
	author = {Addison, P. A. and Malhotra, S. S.}
}
