Hijmans, Robert J. This polygon shapefile contains the boundary of Poland (adm0). This layer is part of the Global Administrative Areas 2015 (v2.8) dataset. 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 first-level administrative divisions of Poland (adm1). Level 1 divisions include provinces. This layer is part ... 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 Poland (adm2). Level 2 divisions include cities and counties. This lay... University of California, Berkeley. Museum of Vertebrate Zoology and International Rice Research Institute.
United States, Office of Strategic Services. Shows frontiers and administrative boundaries. Frontiers printed in color on black-and-white topographic base map. Relief shown by contours and spo... OSS.