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Author
U.S. Geologic Survey; Pennsylvania Bureau of Topographic and Geologic Survey
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Subject
Imagery and Base Maps
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Institution
Penn State
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Year
2000
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1 entry found
Search Results
1. Digital Orthophoto (DOQQ - quarter-quadrangle) for Virginia
2000. U.S. Geologic Survey; Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ...