EN
In order to investigate the influence of the 4f electrons on the scattering processes we measured resistivity of the NdPb_{3} in the temperature range 7-300 K. As a result, we could compare the experimentally determined magnetic contribution to the resistivity with the theoretically calculated ones for the exchange and quadrupolar scattering. The results may confirm that the direct Coulomb interactions between 4f and conduction electrons predominate.