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References
- ↑ "Polar Bear Quicklook". space.jpl.nasa.gov. Retrieved 2023-08-14.
- ↑ "NASA - NSSDCA - Polar BEAR". nssdc.gsfc.nasa.gov. Retrieved 2023-08-14.
- ↑ "Satellite Leaves Museum to Fly". New York Times . 1986-07-12. Retrieved 2023-08-14.
- ↑ McCloskey, William (1987). "The Flight of Polar BEAR: A Successful Satellite Program Grows from Parts and Details" (PDF). jhuapl.edu.
