. Bulletin. Plant diseases -- United States. Bull. No. 21, O'V. Vog. Phys. and Patli., U S. Dept Agr Pl»te I. w ! "I 1 m" \ I. A RED CEDAR SLAB SHOWING THE FIRST STAGE OF POLYPORUS 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 United States. Division of Vegetable Physiology and Pathology. Washington : G. P. O.

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Keywords: ., book, bookcentury1800, bookdecade1890, bookpublisherwashingtongpo