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USGS first map
The first mao the USGS created. -
1940 plane-table surveying
it was was the main method of mapping to this point -
photo taken
1950 a photograph was taken of a Coast Guardsman prepares to take pictures during a flight -
1972
the national acronotics and space administration launched the first landsat satallite -
1999
a team of scientists used landsat images to find a new site at dinosour early mammal fossils in the gabi desert -
1999
NASA launched another satellite, the earth observing system
