1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, and 2000. Schultz, Kenneth A. This polygon shapefile represents areas that were the subject of interstate territorial disputes between 1947 and 2000. The disputed areas referenc... Stanford Digital Repository.
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2013. Centro Nacional de Registros (El Salvador). This line shapefile represents department boundary lines in El Salvador. The Global Map El Salvador version 2 was developed from Geographic Maps Da... International Steering Committee for Global Mapping.
2013. Centro Nacional de Registros (El Salvador). This polygon shapefile represents departments in El Salvador. The Global Map El Salvador version 2 was developed from Geographic Maps Data 2008 at... International Steering Committee for Global Mapping.
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.
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.