00542nam a2200181 a 450000500170000008200210001710000170003824500440005526000340009930000280013363000250016163000390018670000150022596400250024099700120026599900170027795200660029420251203091007.0  a338.9009172bCAS  aCasley, D J.  aData collection in developing countries  aOxfordbClarendon Pressc1984  axi, 244 p.b22 cm.cPB.  aSampling, Statistics  aEconomic data-Developing countries  aLury, D A.  bENGc100de010fg_  a32973 C  c26085d26085  00104070aPUbPUd1998-04-08l0o338.9009172 CASp32973yBK