@conference {11849,
	title = {Spatial and Temporal Ozone and Sulfur Dioxide Distribution in the Great Smoky Mountains},
	booktitle = {72nd Annual Meeting Air Pollution Control Association},
	year = {1979},
	pages = {52},
	address = {Cincinnati, Ohio, June 24-29, 1979},
	keywords = {Air quality, Ozone},
	author = {Stephens, N. Thomas and Rosenquest, J. M and L{\"u}bkert, Barbara}
}
@conference {11809,
	title = {A Study of Ambient Air Quality and Visibility in National Parks},
	booktitle = {2nd Conference on Scientific Research in the National Parks},
	year = {1979},
	month = {November 26-30},
	pages = {130},
	publisher = {Virginia Polytechnic Institute},
	organization = {Virginia Polytechnic Institute},
	keywords = {Air quality, Flora, Vegetation monitoring},
	author = {Stephens, N. Thomas and Larson, Gary L and Albee, Thomas F}
}
