00333nam a2200109Ia 4500008004100000082002000041100003900061245004600100260003200146300000900178440003600187260625b        |||||||| |||| 00| 0 eng d  a519.52bUn58.PS  aUnited Nations. Statistical Office  aPreparation of sampling survey reportsb/  aNew York:bThe Auth.,c1950  a13p.  aStatistical papers series no. 1