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	title = {Nitrogen saturation in a long-term forest experiment with annual additions of nitrogen},
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	volume = {85},
	year = {1995},
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	author = {Tamm, C.O. and Aronsson, A. and Popovic, B.}
}
@article {195,
	title = {Changes in soil acidity from 1927-1982/84 in a forested area of south west Sweden},
	journal = {Scandinavian Journal of Forest Research},
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	year = {1986},
	pages = {219-232},
	author = {Hallbacken, L. and Tamm, C.O.}
}
@article {788,
	title = {Growth, yield and nutrition in carpets of a forest moss (Hylocomium splendens ).},
	volume = {43},
	year = {1953},
	pages = {1-140},
	author = {Tamm, C.O.}
}
