PLIO-PLEISTOCENE STRATIGRAPHY AND RELATIONS BETWEEN MARINE AND NON-MARINE SUCCESSIONS IN THE MIDDLE VALLEY OF THE TIBER RIVER (LATIUM, UMBRIA) (O. Girotti & M. Mancini , Trans.). (2003). Alpine and Mediterranean Quaternary, 16(1 bis), 89-106. https://amq.aiqua.it/index.php/amq/article/view/579