00421ca0 a2200157ua 450000500170000000800410001702000140005804000090007204100080008108200130008910000240010224500580012626000530018430000110023765000150024820220127131552.0070612s               g     b000 u eng u  a471349143  aMAIN1 aeng14a310bHAN1 aHansen, Morris h  .10aSample survey methods and theory / cMorris H Hansen.  aNew York ;bJohn Willey And Sons ltd , cc 2002.  a332 p. 0aStatistics