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First Killing Frost of Spring, 1911



Title: First Killing Frost of Spring
Projection: Unknown,
Source Bounding Coordinates:
W: -125 E: -65 N: 45 S: 25

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Description: A map showing the average dates of first killing frost in Spring.
Source: Isaiah Bowman, Ph. D., Forest Physiography (New York, NY: John Wiley and Sons, 1911) 116
Map Credit: The Private Collection of Roy Winkelman.
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 Maps ETC > United States > Meteorology > First Killing Frost of Spring, 1911
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