CITATION STYLE
Gilbert, O. (1965). Lichens as indicators of air pollution in the Tyne Valley. Ecology and the Industrial Society, 67(1), 15–30. Retrieved from http://scholar.google.com/scholar?hl=en&btnG=Search&q=intitle:AS+INDICATORS+OF+AIR+POLLUTION+IN+THE+TYNE+VALLEY#1
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