This first publication of the Research Group for European Migration Problems is devoted to the importance of migration in Western Europe. Small wonder that espedally German sodal sdentists, living in a country invaded by millions and millions of refugees and expellees from Central and Eastern Europe, are paying so much attention to the solution of regional andnationaloverpopulation. It is doubtful whether we can speak of European overpopulation in general. Dr Hilde Wander's investigations make it dear that from a European point of view short distance migration may solve many problems for...