ENRICHMENT (URANIUM) 2 ENRIQUECIMIENTO (URANIO) BETA COUNTING 1 CADMIUN RATIO 1 COMBUSTIBLES NUCLEARES 1 Comparison of experimental techniques to obtain P 28 1 EXTRACCION CON DISOLVENTES 1 FISSION 1 FOSFORO 28 1 GAMMA COUNTING 1 HEXAFLUORURO DE URANIO 1 NEUTRONES 1 NEUTRONS 1 NUCLEAR FUELS 1 NUCLEAR REACTORS 1 Neutron studies on the conversion of the RA-3 Reactor LEU fuel 1 REACTORES NUCLEARES 1 SOLVENT EXTRACTION 1 URANIO 239 1 URANIUM HEXAFLUORIDE 1