00350nam a2200121Ia 4500082002900000100003900029245004300068260003500111300000600146490006600152500000500218700000500223  a519.50609405332bUn58.HS  aUnited Nations. Statistical office  aHandbook of statistical organizationb  aNew YorkbUnited Nationsc1954  a   aU. N. Statistical office studies in methods, series F.v no.6  a  a