538,618 DARTE LENNART Quality control of technetium-99m radio-pharmaceuticals in nuclear medicine. The use of gel chromatography column scenning in research and routine clinical work. Lund 1981 8° s. VIII, 64, prac 8+2 wkł. s. nlb. 4, il. Akad. avhandl. Univ. of Lund, Dep. of Radiation Physics