The importation into the United States of the Parasites of the gipsy moth and the brown-tail moth : a report of progress, with some consideration of previous and concurrent efforts of this kind.
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Bibliographic Information
The importation into the United States of the Parasites of the gipsy moth and the brown-tail moth : a report of progress, with some consideration of previous and concurrent efforts of this kind.
(Bulletin / U.S. Department of Agriculture, Division of Entomology, no. 91)
Government Printing Office, 1911
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At head of title: U. S. Department of Agriculture, Bureau of Entomology