000 00242nam a2200097Ia 4500
008 220201s9999 xx 000 0 eng d
100 _aDES RAJ & CHANDHOK (PROMOD)
245 0 _aSAMPLE SURVEY THEORY
260 _bNAROSA PUB HOUSE
942 _2ddc
999 _c97720
_d97720