  We report an unconventional temperature dependence of the resistivity in
several strongly correlated systems approaching a localized to itinerant
electronic transition from the itinerant electron side. The observed
resistivity, proportioanl to T^(3/2)over the entire range of materials
discussed, cannot be explained within the framework of existing theories. We
propose a model in which the scattering of the conduction electrons by locally
cooperative bond-length fluctuations in a matrix of vibronic and Fermi-liquid
electrons can account for the experimental data.
