00436nam a2200121Ia 4500082002300000100005900023245009000082260006500172300002100237490004600258500000500304700000500309  a331.12794bUn58.LS  aUnited Nations, Economic Commission for Europe, Geneva  aLabour supply and migration in EuropebDemographic dimensions 1950-1975 and prospects  aNew YorkbSectt. of the Economic commission for Europec1979  axi, 332p. Tables  aEconomic survey of Europe in 1977v pt. 2  a  a