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@mastersthesis {1717,
	title = {Ammonia deposition to semi-natural vegetation},
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	year = {2006},
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	author = {Hornung, M. and Bull, K.R. and Cresser, M.S. and Loveland, P.J. and Langan, S.J. and Reynolds, B. and Robertson, W.H. and Battarbee, R.W. (Eds)}
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