Landwehr, V. R., W. J. Phillipsen, and M. E. Ascerno. 1981. An integrated approach to managing native elm bark beetle populations in Minnesota. Pages 454-465 in E. S. Kondo, Y. Hiratsuka, and W. B. G. Denyer (eds.), Proceedings of the Dutch elm disease symposium and workshop, 5-9 October 1981, Winnipeg, Manitoba. Canada Department of the Environment, Canadian Forestry Service and Province of Manitoba, Department of Natural Resources. 517 p.
Landwehr et al. 1981
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