ISOBAR MODEL PIONS ANGULAR DISTRIBUTION DIFFRACTION DISTRIBUCION ANGULAR INDEPENDENT-PARTICLE MODEL MODELO DE PARTICULAS INDEPENDIENTES MODELO ISOBARICO MODELO ISOBARO PIONES Analysis of Inelastic Collision π- + C at 915 MeV BERILIO BUBBLE CHAMBERS CALCULOS POR ORDENADORES CAMARAS DE BURBUJAS CARBONO CHARGE STATES CHARGED PARTICLES CINETICA COMPUTER CALCULATIONS Copia 2 Carta a E. Pérez Ferreira del Dr. Galvele sobre Cragnolino, Gustavo DATOS EXPERIMENTALES DIFRACCION DISPERSION ELASTICA DISPERSION RELATIONS Determination of neutron spectra with nuclear plates and its application to the measurement of the Be8 excitation levels ELASTIC SCATTERING EMULSIONES NUCLEARES ESPECTROS DE NEUTRONES ESTADOS DE CARGA