About CHENG H
About Univ. Minnesota, MN, USA
About EDWARDS R L
About Univ. Minnesota, MN, USA
About HOFF J
About Univ. Minnesota, MN, USA
About GALLUP C D
About Univ. Maryland, MD, USA
About RICHARDS D A
About Univ. Bristol, Bristol, GBR
About ASMEROM Y
About Univ. New Mexico, NM, USA
About Chemical Geology
About uranium isotope
About トリウム230法年代測定
About Dating
About ウラン234
About トリウム230
About 半減期