@article{weko_45389_1, author = "Tokonami,Shinji and Yoshinaga,Shinji and Sugino,Masato and Kobayashi,Yosuke and Takahashi,Hiroyuki and Sorimachi,Atsuyuki and Ishikawa,Tetsuo and et.al", title = "Influence of environmental thoron on radon measurements and related issues", journal = "The Natural Radiation Environment : 8th International Symposium (NRE VIII), Buzios, Rio de Janeiro, Brazil, 7-12 October 2007 (AIP Conference Proceedings ; vol. 1034)", year = "2008", volume = "1034", number = "", pages = "145--148", month = "nov" }