@article {185,
	title = {Forest soil chemical changes between 1949/50 and 1987},
	journal = {Journal of Soil Science},
	volume = {41},
	year = {1990},
	pages = {133-135},
	author = {Billett, M.F. and Parker-Jervis, F. and FitzPatrick, E.A. and Cresser, M.S.}
}
