. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. 27. Lettuce Diseases. o. Drop (after Humphrey), b. Septoria leaf spot, c, same as &. but older spots, d. pycnida, e. pycniospores (af- ter Selby).. 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 Taubenhaus, Jacob Joseph, 1884-1937. New York : E. P. Dutton

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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920