Analysis of information sources in references of the Wikipedia article "Irans geografi" in Norwegian language version.
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|doi=-verdien (hjelp). Besøkt 24. juni 2020. «Construction of a causeway bridge on the Lake Urmia accelerated the drying trend of the largest hyper-saline lake of the world.»|doi=-verdien (hjelp). Besøkt 24. juni 2020. «Construction of a causeway bridge on the Lake Urmia accelerated the drying trend of the largest hyper-saline lake of the world.»