radiocarbon method radioceramics radio channel radiochemical radiochemical analysis radiochemical nuclide radiochemistry radiochromatography radiochrometer radio circuit radiocobalt radio code radio communication radio communication system radio compass radio contact radio control radio-controlled radio-controlled target radiode |
radiocarbon method ядр. определяне на възраст по радиовъглерод Търсената дума е намерена |