Hijmans, Robert J. This polygon shapefile contains the first-level administrative divisions of El Salvador (adm1). Level 1 divisions include departments. This layer i... University of California, Berkeley. Museum of Vertebrate Zoology and International Rice Research Institute.
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Hijmans, Robert J. This polygon shapefile contains the national boundary of El Salvador (adm0). This layer is part of the Global Administrative Areas 2015 (v2.8) data... University of California, Berkeley. Museum of Vertebrate Zoology and International Rice Research Institute.
Hijmans, Robert J. This polygon shapefile contains the second-level administrative divisions of El Salvador (adm2). Level 2 divisions include municipalities. This lay... University of California, Berkeley. Museum of Vertebrate Zoology and International Rice Research Institute.