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21. World River and Lake Centerlines with Scale Ranking, 1:10 million (2012)

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shapefile depicts single-line drainages and lake centerlines with scale rankings worldwide ranked by relative importance. Includes na... North American Cartographic Information Society.

22. World River and Lake Centerlines with Scale Ranking, 1:50 million (2012)

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shapefile depicts single-line drainages and lake centerlines worldwide with scale rankings. Ranked by relative importance. Includes n... North American Cartographic Information Society.