Scott, T.M., King, C.J. & Walker, C., 1974. Trials with insecticide sprays to control elm bark beetles in logs. Quarterly Journal of Forestry 67(2): 1-4.
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Scott, T.M. & Walker, C., 1975. Experiments with insecticides for the control of Dutch elm disease. Forest Record 105. Forestry Commission, Edinburgh.: 21 pp..
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