Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "International Conference on High Levels of Natural Radiation and Sohrabi, M. and Ahmed, J. U. and Durrani, S. A.","High levels of natural radiation : proceedings of an International Conference on High Levels of Natural Radiation organized by the Atomic Energy Organization of Iran in co-operation with the International Atomic Energy Agency, the World Health Organization, the United Nations Environment Programme and the International Nuclear Track Society and held in Ramsar, 3-7 November 1990",,IAEA,1993,Proceedings series,,,,https://cir.nii.ac.jp/crid/1130282271119567872