. Dutch elm disease, Graphium ulmi. Dutch elm disease; Elm. PLATE V. Cephalosporium stage of Graphium 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 Clinton, G. P. (George Perkins), 1867-1937; McCormick, Florence A. (Florence Anna). New Haven : Connecticut Agricultural Experiment Station

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Keywords: ., bookcentury1900, bookpublishernewhavenconnecticutagriculturalex