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אין תוצאות חיפוש עבור: results/Some_substances_give_out_radiation_from_the_nuclei_of_their_atoms_all_the_time__whatever_is_done_to_them._These_substances_are_said_to_be_radioactive.,3,0,7033;10342;10429,0,25,1,tn,1.html
אין תוצאות חיפוש עבור: results/Some_substances_give_out_radiation_from_the_nuclei_of_their_atoms_all_the_time__whatever_is_done_to_them._These_substances_are_said_to_be_radioactive.,3,0,7033;10342;10429,0,25,1,tn,1.html