Due to the proliferation of preferential trading arrangements, the questions Viner addresses and some of his insights are more important and relevant today...Jacob Viner's classic work, The Customs Union Issue, edited and with an introduction by Paul Oslington, has a special significance.The book is accessible to a broad range of readers, including trade students, trade economists, policy-makers and business people. The book will benefit anyone who is interested in non-discriminatory free trade in general and in free trade agreements in particular.