Diseases of plants in the Diseases of plants in the United States in 1937 diseasesofplants110wood Year: 1939 167 PORTLAND, OREGON Nl ov • Dec. Fig. 17. Accumulated temperature in degrees F. at Portland, Oregon for the year I937 (dotted line) compared Y;ith normal (solid line), and mean monthly temperatures (plain bars) compared with normal (shaded bars).
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