Fixing soft margins / Paul Kofman, Albert de Vaal, Casper G. de VriesTarget zone management: commodity boards and speculative raids / Paul Kofman, Albert de Vaal and Casper de VriesTrade in producer services between developed and developing countries: Who is actually being served? / Charles van Marrewijk, Joachim Stibora, Albert de VaalServices and services trade: a theoretical inquiry / Joachim J. Stibora & Albert de VaalServices and services trade : a theoretical inquiry / Joachim J. Stibora en Albert de VaalServices, tradeability and economic geography / Marianne van den Berg and Albert de VaalExplaining the wage gap: Heckscher-Ohlin, economic geography and services availability / J. Peeters and A. de VaalHow fair is fair trade? / R. Maseland and A. de VaalOn labour standards and free trade / Michiel Kok, Richard Nahuis and Albert de VaalExplaining the wage gap: Heckscher-Ohlin, economic geography and services availability / J. Peeters and A. de VaalKnowledge diffusion from FDI and intellectual property rights / Roger Smeets and Albert de Vaal