Annand, P. N. 1941. Investigations of insects affecting forest and shade trees. Dutch elm disease eradication. Pages 1, 25-26, 38-42 in Report of the Chief of the Bureau of Entomology and Plant Quarantine, 1941. United States Department of Agriculture, Bureau of Entomology and Plant Quarantine, Annual Report 1941. 119 p.
Annand 1941
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