TY - Generic T1 - Air Pollution and Agricultural Aphid Pests. I: Fumigation Experiments with SO2 and NO2. Y1 - 1990 A1 - Houlden, G. A1 - McNeill, S. A1 - Aminu-Kano, M. A1 - Bell, J.N.B. JF - Environmental Pollution VL - 67 ER -