  Project Thermalization (Experiment SERP-E-190 at IHEP) is aimed to study the
proton - proton interactions at 50 GeV with large number of secondary
particles. In this report the experimentally measured topological cross
sections are presented taking into account the detector response and procession
efficiency. These data are in good agreement with gluon dominance model. The
comparison with other models is also made and shows no essential discrepancies.
