@article {760,
	title = {Early effects of acid mist on Sitka spruce planted on acid peat.},
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	year = {1998},
	pages = {1-25},
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}
@article {538,
	title = {Stem growth reductions in mature Sitka spruce trees exposed to acid mist},
	volume = {96},
	year = {1997},
	pages = {185-193},
	author = {Crossley, A. and Sheppard, L.J. and Cape, J.N and Smith, R.I. and Harvey, F.}
}
