. Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges . a. 3 The scurfy scale, Chionaspis furfurus.—a. twi infested by female scales ; b, with male scales ; < female ; rf, male scale, much enlarged.

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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphila, bookyear1896