Colin Clark

They correctly predicted the effect of Britain's entry would be to relegate this country to a position on the periphery where it would be likely to decline in importance relative to the other countries of Europe. They drew circles on maps to indicate the bands of economic growth potential, widening out from the small area of manufacturing high potential concentrated within the Rhine Valley of Western Germany, eastern Belgium, and south-east Netherlands....will migrate to the centre, to the detriment of the countries on the periphery. Industrial Location and Economic Potential in Western Europe Vol.3 pp197-212