. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . Overlapping porlion of the base of the wing in Cono- cephalus, showing the ridged veins and sound-producing organ.

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Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1906