@article {74,
	title = {Using diatoms to assess agricultural and coal mining impacts on streams, and a multi-assemblage case study},
	journal = {Journal of the North American Benthological Society},
	volume = {28},
	year = {2009},
	chapter = {659-675},
	author = {Smucker, N. J. and Vis, M. L.}
}
