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You searched for: Creator United States Geologic Survey (USGS) Remove constraint Creator: United States Geologic Survey (USGS) Place Pennsylvania Remove constraint Place: Pennsylvania Resource Type Raster data Remove constraint Resource Type: Raster data Time Period 1950-1999 Remove constraint Time Period: 1950-1999

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1.
Imagery imagery

Digital Orthophoto Quarter Quadrangle images for Pennsylvania Imagery imagery Pennsylvania State University pennsylvania-state-university

1993. United States Geologic Survey (USGS) and 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 ... State of Pennsylvania.

2.
Imagery imagery

Digital Orthophoto Quarter Quadrangle images for Pennsylvania Imagery imagery Pennsylvania State University pennsylvania-state-university

1999. United States Geologic Survey (USGS) and 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 ... State of Pennsylvania.