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Metr	Symposium organized by the International Atomic Energy Agency (Vienna, 14-16 October 1959).     Metrology of radionuclides [Текст] : Proceedings of a symposium organized by the International Atomic Energy Agency, Vienna, 14-16 October 1959 / Symposium organized by the International Atomic Energy Agency,  Vienna,  October . — Vienna : International Atomic Energy Agency, 1960. — 472 p.