2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This line shapefile depicts tropical circles, polar circles, the International Date Line and the equator as geographic lines. These data are repres... North American Cartographic Information Society.
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2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This line shapefile depicts tropical circles, polar circles, the International Date Line and the equator as geographic lines. Same as 50 million ge... North American Cartographic Information Society.
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This line shapefile depicts tropical circles, polar circles, the International Date Line and the equator as geographic lines. Same as 50 million ge... North American Cartographic Information Society.