@article {508, title = {Atmospheric Change - Effect on Plant Pests and Diseases}, journal = {Parasitology}, volume = {106}, year = {1993}, pages = {S11-S24}, author = {Bell, J.N.B. and McNeill, S. and Houlden, G. and Brown, V.C. and Mansfield, P.J.} } @article {1630, title = {Air Pollution and Agricultural Aphid Pests. I: Fumigation Experiments with SO2 and NO2.}, journal = {Environmental Pollution}, volume = {67}, year = {1990}, pages = {305-314}, author = {Houlden, G. and McNeill, S. and Aminu-Kano, M. and Bell, J.N.B.} } @article {1464, title = {Air pollution and agricultural aphid pests. I: Fumigation experiments with SO2 and NO2.}, journal = {Environmental Pollution}, volume = {67}, year = {1990}, pages = {305-314}, author = {Houlden, G. and McNeill, S. and Aminu-Kano, M. and Bell, J.N.B.} }