@article {201,
	title = {Acid deposition: its nature and impacts},
	number = {Proceedings of the Royal Society of Edinburgh 97},
	year = {1991},
	pages = {273-324},
	author = {Last, F.T.},
	editor = {Last, F.T. and Watling, R.}
}
@inbook {188,
	title = {Acid rain since 1985 - times are changing},
	booktitle = {Acid deposition: its nature and impacts},
	series = {Proceedings of the Royal Society of Edinburgh},
	volume = {97},
	year = {1991},
	pages = {1-15},
	author = {Brydges, T.G. and Wilson, R.B.},
	editor = {Last, F.T. and Watling, R.}
}
@article {202,
	title = {Acidic deposition: its nature and impacts},
	year = {1991},
	author = {Last, F.T. and Watling, R.}
}
