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Author
- National Geophysical Data Center10
- Geological Survey (U.S.)8
- Instituto Nacional de Estadística, Geografía e Informática (Mexico)7
- Canada Centre for Remote Sensing6
- Kelso, Nathaniel Vaughn4
- Patterson, Tom4
- National Atlas of the United States2
- United States. Bureau of Transportation Statistics2
- Beningo, Steve1
- Canada Centre for Mapping1
- Hunt, Raquel1
- Liu, Zhi1
- United States. Bureau of Customs and Border Protection1