@article {32440,
	title = {Diagnosis of air pollutant and natural stress symptoms on forest vegetation in western Canada},
	volume = {Inf. Report. NOR-X-228},
	year = {1980},
	pages = {84},
	institution = {Environ. Canada., For. Ser., North. For. Res. Cent. },
	address = {Edmonton, AB},
	author = {Malhotra, S. S. and Blauel, R. A.}
}
