00283nam a2200121 a 450000500170000002000150001708200160003210000130004824500270006126000280008830000240011670000210014020251203110743.0  a8173191360  a519.52bRAJ  aRaj, Des  aSampling Survey Theory  aNew DelhibNarosac1999  axv,346p.c24 cm. PB  aChandhok, Promod