Results from a study of p-nucleus interactions in emulsion at an incident energy of 300 GeV are presented. The observed events were separated into those belonging to the light (C,N,O) and the heavy (Ag, Br) groups of target nuclei. Some characteristics of the fast-charged-(shower-) particle multiplicity and angular distributions for the light and heavy groups, as well as for emulsion, are reported and compared with the results from our previous experiments at 200 GeV. The average number of shower particles,
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