00506nam a2200181 a 450000500170000002000150001708200160003210000130004824500250006126000450008630000240013169000240015570000210017996400160020099700190021699900190023595200700025420251203110913.0  a8173191360  a519.52bRAJ  aRaj, Des  aSample survey theory  aNew DelhibNarosa Publishing housec1998  axv,346p.c24 cm. PB  aSampling techniques  aChandhok, Promod  bcdefg_  a128530 LIBSC C  c106892d106892  00104070aPUbPUd2008-03-10g180.00l0o519.52 RAJp128530yBK