@article {833,
	title = {Effect of SO2 on the Reproduction of Pea Aphids, Acyrthosiphon- Pisum, and the Impact of SO2 and Aphids on the Growth and Yield of Peas},
	journal = {Environmental Pollution},
	volume = {48},
	year = {1987},
	pages = {285-294},
	author = {Warrington, S. and Mansfield, T.A. and Whittaker, J.B.}
}
