00487nam a2200133Ia 4500082002300000100010500023245008600128260003500214300001500249440007300264500000500337653000600342700000500348  a304.60723bW926.MD  a"Workshop on methodology of demographic sample surveys", Copenhagen, Denmark, 24 Sept.- 3 Oct., 1969  aMethodology of demographic sample surveys; report of the interregional workshopb  aNew YorkbUnited Nationsc1971  aiii, 311p.  aUpNpEconomic and Social affairsxDepttpof- Statistical papersx51  a  a   a