Subnuclear Phenomena, Part B is the second part of the compilation of the proceedings of the seventh Course of the International School of Physics, held in July 1969 in Erice, Italy. The said program is focused on the analyticity and algebraic properties in particle physics. This book includes topics such as leptonic and semileptonic interactions; nonleptonic decays; baryon, nucleon, and meson resonances; inelastic collision of hadrons; and the quark model. Also covered are specialized topics such as the large hydrogen bubble chamber; physics of Ke4 decays; and the dispersion theory. Just like Part A, this part is recommended for physicists, especially those interested in the further study of particle physics.