Böcker i Grammatik der Oskisch-Umbrischen Dialekte 2 Volume Set-serien

In this two-volume work, published in 1892-7, Swiss philologist Robert von Planta (1864-1937) gives an exhaustive account of the history and development of Osco-Umbrian phonology and syntax. In Volume 1 the reader is guided through different types of Osco-Umbrian dialect and given an overview of their phonology.