Citation: | LIN CANSHENG;HUANG MEIXIN Institute of Atomic Energy, P. O. Box 275, Beijing. THE PREPARATION OF CARRIER-FREE ~(234)Th BY EXTRACTION-CHROMATOGRAPHY[J]. Atomic Energy Science and Technology, 1987, 21(3): 321-321. DOI: 10.7538/yzk.1987.21.03.0321 |