. Diseases of poultry; their etiology, diagnosis, treatment, and prevention. Poultry. External Parasites 221 the birds most likely to be infected are those with a deficient supply of oil in the skin. The conditions which favor its. -';/ 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 Pearl, Raymond, 1879-1940; Surface, Frank Macy, 1882-1965; Curtis, Maynie Rose, 1880-. New York, The Macmillan Company

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectpoultry, bookyear1915