Frontmatter -- Preface -- Contents -- Introduction. Genealogical classification of Semitic and the role of lexical isoglosses -- Chapter 1. The basic vocabulary of Proto-Semitic: form and meaning -- Chapter 2. Historical unity and internal division of West Semitic as reflected in the basic vocabulary -- Chapter 3. Lexical isoglosses and the Central Semitic hypothesis -- Chapter 4. North-West Semitic as a genealogical unity: grammar and lexicon -- Chapter 5. Lexical isoglosses and the genealogical position of Ugaritic -- Chapter 6. From Old to Modern Aramaic: the historical unity of Aramaic as reflected in the basic vocabulary -- Chapter 7. Lexical isoglosses and the historical unity of Ethiopian Semitic -- Chapter 8. Modern South Arabian as a genealogical subgroup: the lexical dimension -- Conclusions -- References -- Abbreviations of lexicographic and grammatical tools -- Abbreviations of language names -- Lexical Index