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Roc Drumlins,



Title: Roc Drumlins
Projection: Unknown,
Source Bounding Coordinates:
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Description: Roc drumlins or drumloids. The drumlin-shaped forms in the upper part of map are developed on shale.
Source: Isaiah Bowman, Ph. D, Forest Physiography (New York, NY: John Wiley and Sons, 1911) 717
Map Credit: The Private Collection of Roy Winkelman
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 Maps ETC > United States > New York > Roc Drumlins,
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