PART 1: BASIC ISSUES - Harmonization of Direct Taxes in the European Community; M.Daly - Direct Taxation Reform in the Main Industrialized Countries; M.G.Briotti - Measures of Tax Efforts Revisited: from Summary to Decomposable Tax Ratios; P.Roberti - PART 2: TAXATION, ECONOMIC ACTIVITY AND FACTOR USE - Social Security Contributions and Efficiency Wage Theory: Incidence and Effects on Employment; G.Pisauro - Prevention of Global Warming and Taxation of Energy and Carbon Emissions: On a Recent EC Proposal; D.Piacentino - PART 3: TAXATION AND BUSINESS INCOME - The Taxation of Income from Capital in Italy (1980-1990); J.S.Alworth & L.Castellucci - A Complicated Tax: the Value Added Tax; M.Leccisotti & M.Mare - Fiscal Adjustments between Fiscal Harmonization and the Maastricht Convergence Criteria; P.Roberti & M.Visaggio - Index