. The Conference called by the Governor of Pennsylvania to consider ways and means for preventing the spread of the chestnut tree bark disease : The Capitol, Chamber of the House of Representatives, Harrisburg, Pennsylvania, February 20 and 21, 1912 : stenographic report of proceedings of the conference. . No. ;). Distrihution of the chestnut bark disease. Horizontal lines indicate approximate distrilnition uf uninfected chestnut; dots indicate isolated infected spots ; the heavier lines in various directions indicate varyina; degrees of infection culminatins in an area about New York C
. The Conference called by the Governor of Pennsylvania to consider ways and means for preventing the spread of the chestnut tree bark disease : The Capitol, Chamber of the House of Representatives, Harrisburg, Pennsylvania, February 20 and 21, 1912 : stenographic report of proceedings of the conference. . No. ;). Distrihution of the chestnut bark disease. Horizontal lines indicate approximate distrilnition uf uninfected chestnut; dots indicate isolated infected spots ; the heavier lines in various directions indicate varyina; degrees of infection culminatins in an area about New York City in which all chestnut trees are 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 Pearson, Raymond A. (Raymond Allen), 1873-1939. Harrisburg : C. E. Aughinbaugh, Printer to the State of Pennsylvania
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1910, bookyear1912
