• Features Hydrological Nigeria hydrobasins[main_bas dist_sink sub_area basin_name dist_main pfaf_id up_area the_geom label endo coast next_sink sort next_down hybas_id ]
• grid: /gid (unitless) ordered (1) to (53) by 1.0 N= 53 pts :grid
• Features Hydrological Nigeria hydrobasins the_geom[ | gid]
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SOURCES .Features .Hydrological .Nigeria .hydrobasins the_geom gid exch 2 index .label