@article {528,
	title = {The effect of repeated N fertlization on mye infection in heather (Calluna vulgaris (L) Hull)},
	volume = {129},
	year = {1995},
	pages = {605-609},
	author = {Caporn, S.J.M and Song, W. and Read, D.J. and Lee, J.A.}
}
@inbook {527,
	title = {Acid Rain and its Impact: The Critical Loads Debate},
	year = {1994},
	pages = {146-150},
	publisher = {Environmental Change Research Centre/ENSIS},
	organization = {Environmental Change Research Centre/ENSIS},
	chapter = {Critical loads of nitrogen for upland heather (Calluna vulgaris). },
	address = {London},
	author = {Caporn, S.J.M and Carroll, J. and Lei, Y. and Song, W. and Read, D.J. and Lee, J.A. and Battarbee, R.W. (Eds)}
}
