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THE RIVER AND THE ROCKS
The Geologic Story of Great Falls and the Potomac River Gorge
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THE RIVER AND THE ROCKS
The Geologic Story of Great Falls and the Potomac River Gorge
![cover of document](images/cover.jpg)
United States Department of the Interior
United States Geological SurveyNational Park Service
1970
TABLE OF CONTENTS
usgs/great_falls/index.htm
Last Updated: 01-Mar-2005
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