. Injurious insects : how to recognize and control them . Insect pests; Insect pests. Fig. 491. — Work of the Grapevine Aphis. Original. Fig. 492. — The Grapevine Aphis. Greatly enlarged. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912