Dalen, Hendrik P. van; Vuuren, Aico P. van - Tinbergen Instituut - 2003
-005-2933-4">'De Economist'</A>, 2005, 153(2), 139-165.<P> How much does a nation spend on resources to 'grease the wheels of trade … traders. This image was derived in the seventeenth century from successes in long distance trade, shipping and financial … in enhancing transactions cities or agglomerations remain important, suggesting that face-to-face trade remains an …