00648nam a2200181Ia 4500082002300000100005900023245009000082260006500172300002100237490004600258500000500304690000600309700000500315952010500320964001700425921000900442999001500451  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   a  00104070aISIbISId1998-07-29l0o331.12794 Un58.LSpDP16221r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a4154  c4154d4154