"Gamkrelidze and Ivanov's wide-ranging and interdisciplinary work, superbly translated from Russian, is a must for every student of Indo-European prehistory. Its erudition is unsurpassed, and its unorthodox conclusions are a continuing challenge." Prof. Dr. Martin Haspelmath, Max-Planck-Institut fur Evolutionare Anthropologie The authors propose a revision of views on a number of central issues of Indo-European studies. Based on findings of typology, they suggest a new analysis of the phonological system of Proto-Indo-European (the 'Glottalic Theory'); they offer novel assumptions about the...